diff --git a/plugins/problemreporter/problemtreeview.cpp b/plugins/problemreporter/problemtreeview.cpp
index eb1549e262..59fe0817bf 100644
--- a/plugins/problemreporter/problemtreeview.cpp
+++ b/plugins/problemreporter/problemtreeview.cpp
@@ -1,218 +1,220 @@
 /*
  * KDevelop Problem Reporter
  *
  * Copyright (c) 2006-2007 Hamish Rodda <rodda@kde.org>
  * Copyright 2006 Adam Treat <treat@kde.org>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU Library General Public License as
  * published by the Free Software Foundation; either version 2 of the
  * License, or (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public
  * License along with this program; if not, write to the
  * Free Software Foundation, Inc.,
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
 #include "problemtreeview.h"
 
 #include <QAction>
 #include <QContextMenuEvent>
 #include <QHeaderView>
 #include <QIcon>
 #include <QItemDelegate>
 #include <QMenu>
 #include <QSortFilterProxyModel>
 
 #include <KLocalizedString>
 
 #include <interfaces/icore.h>
 #include <interfaces/idocumentcontroller.h>
 #include <interfaces/iassistant.h>
 #include <language/duchain/duchain.h>
 #include <language/duchain/duchainlock.h>
 #include <util/kdevstringhandler.h>
 
 #include "problemreporterplugin.h"
 #include <shell/problemmodel.h>
 #include <shell/problem.h>
 #include <shell/problemconstants.h>
 
 //#include "modeltest.h"
 
 using namespace KDevelop;
 
 namespace KDevelop
 {
 
 class ProblemTreeViewItemDelegate : public QItemDelegate
 {
     Q_OBJECT
 
 public:
     explicit ProblemTreeViewItemDelegate(QObject* parent = nullptr);
 
     void paint(QPainter* painter, const QStyleOptionViewItem& option, const QModelIndex& index) const override;
 };
 }
 
 ProblemTreeViewItemDelegate::ProblemTreeViewItemDelegate(QObject* parent)
     : QItemDelegate(parent)
 {
 }
 
 void ProblemTreeViewItemDelegate::paint(QPainter* painter, const QStyleOptionViewItem& option,
                                         const QModelIndex& index) const
 {
     QStyleOptionViewItem newOption(option);
     newOption.textElideMode = index.column() == ProblemModel::File ? Qt::ElideMiddle : Qt::ElideRight;
 
     QItemDelegate::paint(painter, newOption, index);
 }
 
 ProblemTreeView::ProblemTreeView(QWidget* parent, QAbstractItemModel* itemModel)
     : QTreeView(parent)
     , m_proxy(new QSortFilterProxyModel(this))
 {
     setObjectName(QStringLiteral("Problem Reporter Tree"));
     setWhatsThis(i18n("Problems"));
     setItemDelegate(new ProblemTreeViewItemDelegate(this));
     setSelectionBehavior(QAbstractItemView::SelectRows);
 
     m_proxy->setSortRole(ProblemModel::SeverityRole);
     m_proxy->setDynamicSortFilter(true);
     m_proxy->sort(0, Qt::AscendingOrder);
 
     ProblemModel* problemModel = dynamic_cast<ProblemModel*>(itemModel);
     Q_ASSERT(problemModel);
     setModel(problemModel);
 
     header()->setStretchLastSection(false);
 
     connect(this, &ProblemTreeView::clicked, this, &ProblemTreeView::itemActivated);
 
     connect(model(), &QAbstractItemModel::rowsInserted, this, &ProblemTreeView::changed);
     connect(model(), &QAbstractItemModel::rowsRemoved, this, &ProblemTreeView::changed);
     connect(model(), &QAbstractItemModel::modelReset, this, &ProblemTreeView::changed);
 
     m_proxy->setFilterKeyColumn(-1);
     m_proxy->setFilterCaseSensitivity(Qt::CaseInsensitive);
 }
 
 ProblemTreeView::~ProblemTreeView()
 {
 }
 
 void ProblemTreeView::openDocumentForCurrentProblem()
 {
     itemActivated(currentIndex());
 }
 
 void ProblemTreeView::itemActivated(const QModelIndex& index)
 {
     if (!index.isValid())
         return;
 
     KTextEditor::Cursor start;
     QUrl url;
 
     {
         // TODO: is this really necessary?
         DUChainReadLocker lock(DUChain::lock());
         const auto problem = index.data(ProblemModel::ProblemRole).value<IProblem::Ptr>();
         if (!problem)
             return;
 
         url = problem->finalLocation().document.toUrl();
         start = problem->finalLocation().start();
     }
 
-    ICore::self()->documentController()->openDocument(url, start);
+    if (QFile::exists(url.toLocalFile())) {
+        ICore::self()->documentController()->openDocument(url, start);
+    }
 }
 
 void ProblemTreeView::resizeColumns()
 {
     for (int i = 0; i < model()->columnCount(); ++i)
         resizeColumnToContents(i);
 }
 
 void ProblemTreeView::dataChanged(const QModelIndex& topLeft, const QModelIndex& bottomRight, const QVector<int>& roles)
 {
     QTreeView::dataChanged(topLeft, bottomRight, roles);
     resizeColumns();
 }
 
 void ProblemTreeView::reset()
 {
     QTreeView::reset();
     resizeColumns();
 }
 
 int ProblemTreeView::setFilter(const QString& filterText)
 {
     m_proxy->setFilterFixedString(filterText);
 
     return m_proxy->rowCount();
 }
 
 ProblemModel* ProblemTreeView::model() const
 {
     return static_cast<ProblemModel*>(m_proxy->sourceModel());
 }
 
 void ProblemTreeView::setModel(QAbstractItemModel* model)
 {
     Q_ASSERT(qobject_cast<ProblemModel*>(model));
     m_proxy->setSourceModel(model);
     QTreeView::setModel(m_proxy);
 }
 
 void ProblemTreeView::contextMenuEvent(QContextMenuEvent* event)
 {
     QModelIndex index = indexAt(event->pos());
     if (!index.isValid())
         return;
 
     const auto problem = index.data(ProblemModel::ProblemRole).value<IProblem::Ptr>();
     if (!problem) {
         return;
     }
 
     QExplicitlySharedDataPointer<KDevelop::IAssistant> solution = problem->solutionAssistant();
     if (!solution) {
         return;
     }
 
     QList<QAction*> actions;
     foreach (KDevelop::IAssistantAction::Ptr action, solution->actions()) {
         actions << action->toKAction();
     }
 
     if (actions.isEmpty()) {
         return;
     }
 
     QString title = solution->title();
     title = KDevelop::htmlToPlainText(title);
     title.replace(QLatin1String("&apos;"), QLatin1String("\'"));
 
     QPointer<QMenu> m = new QMenu(this);
     m->addSection(title);
     m->addActions(actions);
     m->exec(event->globalPos());
     delete m;
 }
 
 void ProblemTreeView::showEvent(QShowEvent* event)
 {
     Q_UNUSED(event)
     resizeColumns();
 }
 
 #include "problemtreeview.moc"
diff --git a/shell/problemmodel.cpp b/shell/problemmodel.cpp
index 6094bb4ec3..56d2fd613c 100644
--- a/shell/problemmodel.cpp
+++ b/shell/problemmodel.cpp
@@ -1,372 +1,372 @@
 /*
  * KDevelop Problem Reporter
  *
  * Copyright 2007 Hamish Rodda <rodda@kde.org>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU Library General Public License as
  * published by the Free Software Foundation; either version 2 of the
  * License, or (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public
  * License along with this program; if not, write to the
  * Free Software Foundation, Inc.,
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
 #include "problemmodel.h"
 #include <QThread>
 #include <KLocalizedString>
 #include <interfaces/icore.h>
 #include <interfaces/idocument.h>
 #include <interfaces/idocumentcontroller.h>
 #include <interfaces/iprojectcontroller.h>
 #include <interfaces/ilanguagecontroller.h>
 #include <interfaces/icompletionsettings.h>
 #include <interfaces/iassistant.h>
 #include <QIcon>
 #include <shell/problem.h>
 
 #include <shell/problemstore.h>
 #include <shell/problemstorenode.h>
 #include <shell/filteredproblemstore.h>
 #include <shell/problemconstants.h>
 #include <shell/watcheddocumentset.h>
 
 namespace {
 QIcon iconForSeverity(KDevelop::IProblem::Severity severity)
 {
     switch (severity) {
     case KDevelop::IProblem::Hint:
         return QIcon::fromTheme(QStringLiteral("dialog-information"));
     case KDevelop::IProblem::Warning:
         return QIcon::fromTheme(QStringLiteral("dialog-warning"));
     case KDevelop::IProblem::Error:
         return QIcon::fromTheme(QStringLiteral("dialog-error"));
     case KDevelop::IProblem::NoSeverity:
         return {};
     }
     return {};
 }
 
 }
 
 
 struct ProblemModelPrivate
 {
     ProblemModelPrivate(KDevelop::ProblemStore *store)
         : m_problems(store)
         , m_features(KDevelop::ProblemModel::NoFeatures)
     {
     }
 
     QScopedPointer<KDevelop::ProblemStore> m_problems;
     KDevelop::ProblemModel::Features m_features;
 };
 
 namespace KDevelop
 {
 
 ProblemModel::ProblemModel(QObject * parent, ProblemStore *store)
   : QAbstractItemModel(parent)
   , d(new ProblemModelPrivate(store))
 {
     if (!d->m_problems) {
         d->m_problems.reset(new FilteredProblemStore());
         d->m_features = ScopeFilter | SeverityFilter | Grouping | CanByPassScopeFilter;
     }
 
     setScope(CurrentDocument);
 
     connect(ICore::self()->documentController(), &IDocumentController::documentActivated, this, &ProblemModel::setCurrentDocument);
     connect(ICore::self()->documentController(), &IDocumentController::documentClosed, this, &ProblemModel::closedDocument);
     /// CompletionSettings include a list of todo markers we care for, so need to update
     connect(ICore::self()->languageController()->completionSettings(), &ICompletionSettings::settingsChanged, this, &ProblemModel::forceFullUpdate);
 
     if (ICore::self()->documentController()->activeDocument()) {
         setCurrentDocument(ICore::self()->documentController()->activeDocument());
     }
 
     connect(d->m_problems.data(), &ProblemStore::beginRebuild, this, &ProblemModel::onBeginRebuild);
     connect(d->m_problems.data(), &ProblemStore::endRebuild, this, &ProblemModel::onEndRebuild);
 
     connect(d->m_problems.data(), &ProblemStore::problemsChanged, this, &ProblemModel::problemsChanged);
 }
 
 ProblemModel::~ ProblemModel()
 {
 }
 
 int ProblemModel::rowCount(const QModelIndex& parent) const
 {
     if (!parent.isValid()) {
         return d->m_problems->count();
     } else {
         return d->m_problems->count(reinterpret_cast<ProblemStoreNode*>(parent.internalPointer()));
     }
 }
 
 static QString displayUrl(const QUrl &url, const QUrl &base)
 {
     if (base.isParentOf(url)) {
         return url.toDisplayString(QUrl::PreferLocalFile).mid(base.toDisplayString(QUrl::PreferLocalFile).length());
     } else {
         return ICore::self()->projectController()->prettyFileName(url, IProjectController::FormatPlain);
     }
 }
 
 QVariant ProblemModel::data(const QModelIndex& index, int role) const
 {
     if (!index.isValid())
         return QVariant();
 
     QUrl baseDirectory = d->m_problems->currentDocument().toUrl().adjusted(QUrl::RemoveFilename);
     IProblem::Ptr p = problemForIndex(index);
     if (!p.constData()) {
         if (role == Qt::DisplayRole && index.column() == Error) {
             ProblemStoreNode *node = reinterpret_cast<ProblemStoreNode*>(index.internalPointer());
             if (node) {
                 return node->label();
             }
         }
         return {};
     }
 
     if (role == SeverityRole) {
         return p->severity();
     } else if (role == ProblemRole) {
         return QVariant::fromValue(p);
     }
 
     switch (role) {
     case Qt::DisplayRole:
         switch (index.column()) {
         case Source:
             return p->sourceString();
         case Error:
             return p->description();
         case File:
-            return displayUrl(p->finalLocation().document.toUrl(), baseDirectory);
+            return displayUrl(p->finalLocation().document.toUrl().adjusted(QUrl::NormalizePathSegments), baseDirectory);
         case Line:
             if (p->finalLocation().isValid()) {
                 return QString::number(p->finalLocation().start().line() + 1);
             }
             break;
         case Column:
             if (p->finalLocation().isValid()) {
                 return QString::number(p->finalLocation().start().column() + 1);
             }
             break;
         }
         break;
 
     case Qt::DecorationRole:
         if (index.column() == Error) {
             return iconForSeverity(p->severity());
         }
         break;
     case Qt::ToolTipRole:
         return p->explanation();
 
     default:
         break;
     }
 
     return {};
 }
 
 QModelIndex ProblemModel::parent(const QModelIndex& index) const
 {
     ProblemStoreNode *node = reinterpret_cast<ProblemStoreNode*>(index.internalPointer());
     if (!node) {
         return {};
     }
 
     ProblemStoreNode *parent = node->parent();
     if (!parent || parent->isRoot()) {
         return {};
     }
 
     int idx = parent->index();
     return createIndex(idx, 0, parent);
 }
 
 QModelIndex ProblemModel::index(int row, int column, const QModelIndex& parent) const
 {
     if (row < 0 || row >= rowCount(parent) || column < 0 || column >= LastColumn) {
         return QModelIndex();
     }
 
     ProblemStoreNode *parentNode = reinterpret_cast<ProblemStoreNode*>(parent.internalPointer());
     const ProblemStoreNode *node = d->m_problems->findNode(row, parentNode);
     return createIndex(row, column, (void*)node);
 }
 
 int ProblemModel::columnCount(const QModelIndex& parent) const
 {
     Q_UNUSED(parent)
     return LastColumn;
 }
 
 IProblem::Ptr ProblemModel::problemForIndex(const QModelIndex& index) const
 {
     ProblemStoreNode *node = reinterpret_cast<ProblemStoreNode*>(index.internalPointer());
     if (!node) {
         return {};
     } else {
         return node->problem();
     }
 }
 
 ProblemModel::Features ProblemModel::features() const
 {
     return d->m_features;
 }
 
 void ProblemModel::setFeatures(Features features)
 {
     d->m_features = features;
 }
 
 void ProblemModel::addProblem(const IProblem::Ptr &problem)
 {
     int c = d->m_problems->count();
     beginInsertRows(QModelIndex(), c, c + 1);
     d->m_problems->addProblem(problem);
     endInsertRows();
 }
 
 void ProblemModel::setProblems(const QVector<IProblem::Ptr> &problems)
 {
     beginResetModel();
     d->m_problems->setProblems(problems);
     endResetModel();
 }
 
 void ProblemModel::clearProblems()
 {
     beginResetModel();
     d->m_problems->clear();
     endResetModel();
 }
 
 QVector<IProblem::Ptr> ProblemModel::problems(const KDevelop::IndexedString& document)
 {
     return d->m_problems->problems(document);
 }
 
 QVariant ProblemModel::headerData(int section, Qt::Orientation orientation, int role) const
 {
     Q_UNUSED(orientation);
 
     if (role != Qt::DisplayRole)
         return {};
 
     switch (section) {
         case Source:
             return i18nc("@title:column source of problem", "Source");
         case Error:
             return i18nc("@title:column problem description", "Problem");
         case File:
             return i18nc("@title:column file where problem was found", "File");
         case Line:
             return i18nc("@title:column line number with problem", "Line");
         case Column:
             return i18nc("@title:column column number with problem", "Column");
     }
 
     return {};
 }
 
 void ProblemModel::setCurrentDocument(IDocument* document)
 {
     Q_ASSERT(thread() == QThread::currentThread());
 
     QUrl currentDocument = document->url();
     /// Will trigger signals beginRebuild(), endRebuild() if problems change and are rebuilt
     d->m_problems->setCurrentDocument(IndexedString(currentDocument));
 }
 
 void ProblemModel::closedDocument(IDocument* document)
 {
     if (IndexedString(document->url()) == d->m_problems->currentDocument())
     {   // reset current document
         d->m_problems->setCurrentDocument(IndexedString());
     }
 }
 
 void ProblemModel::onBeginRebuild()
 {
     beginResetModel();
 }
 
 void ProblemModel::onEndRebuild()
 {
     endResetModel();
 }
 
 void ProblemModel::setShowImports(bool showImports)
 {
     Q_ASSERT(thread() == QThread::currentThread());
 
     d->m_problems->setShowImports(showImports);
 }
 
 bool ProblemModel::showImports()
 {
     return d->m_problems->showImports();
 }
 
 void ProblemModel::setScope(int scope)
 {
     Q_ASSERT(thread() == QThread::currentThread());
 
     if (!features().testFlag(ScopeFilter))
         scope = ProblemScope::BypassScopeFilter;
 
     /// Will trigger signals beginRebuild(), endRebuild() if problems change and are rebuilt
     d->m_problems->setScope(scope);
 }
 
 void ProblemModel::setSeverity(int severity)
 {
     switch (severity)
     {
         case KDevelop::IProblem::Error:
             setSeverities(KDevelop::IProblem::Error);
             break;
         case KDevelop::IProblem::Warning:
             setSeverities(KDevelop::IProblem::Error | KDevelop::IProblem::Warning);
             break;
         case KDevelop::IProblem::Hint:
             setSeverities(KDevelop::IProblem::Error | KDevelop::IProblem::Warning | KDevelop::IProblem::Hint);
             break;
     }
 }
 
 void ProblemModel::setSeverities(KDevelop::IProblem::Severities severities)
 {
     Q_ASSERT(thread() == QThread::currentThread());
     /// Will trigger signals beginRebuild(), endRebuild() if problems change and are rebuilt
     d->m_problems->setSeverities(severities);
 }
 
 void ProblemModel::setGrouping(int grouping)
 {
     /// Will trigger signals beginRebuild(), endRebuild() if problems change and are rebuilt
     d->m_problems->setGrouping(grouping);
 }
 
 ProblemStore* ProblemModel::store() const
 {
     return d->m_problems.data();
 }
 
 }