diff --git a/autotests/kurlnavigatortest.h b/autotests/kurlnavigatortest.h
--- a/autotests/kurlnavigatortest.h
+++ b/autotests/kurlnavigatortest.h
@@ -43,6 +43,7 @@
 
     void testButtonUrl_data();
     void testButtonUrl();
+    void testButtonText();
 
     void testInitWithRedundantPathSeparators();
 
diff --git a/autotests/kurlnavigatortest.cpp b/autotests/kurlnavigatortest.cpp
--- a/autotests/kurlnavigatortest.cpp
+++ b/autotests/kurlnavigatortest.cpp
@@ -20,15 +20,19 @@
 #include "kurlnavigatortest.h"
 #include <QtTestWidgets>
 #include <QDir>
+#include <QPushButton>
+#include <QStandardPaths>
 #include <KUser>
+#include <KFilePlacesModel>
 
 #include "kurlnavigator.h"
 #include "kurlcombobox.h"
 
 QTEST_MAIN(KUrlNavigatorTest)
 
 void KUrlNavigatorTest::initTestCase()
 {
+    QStandardPaths::setTestModeEnabled(true);
     m_navigator = new KUrlNavigator(nullptr, QUrl(QStringLiteral("file:///A")), nullptr);
 }
 
@@ -255,6 +259,21 @@
     QCOMPARE(buttonUrl, expectedButtonUrl);
 }
 
+void KUrlNavigatorTest::testButtonText()
+{
+    KFilePlacesModel model;
+    const QUrl url = QUrl::fromLocalFile(QDir::currentPath());
+    model.addPlace("&Here", url);
+    KUrlNavigator navigator(&model, url, nullptr);
+
+    QList<QPushButton *> buttons = navigator.findChildren<QPushButton *>();
+    const auto it = std::find_if(buttons.cbegin(), buttons.cend(), [](QPushButton *button) {
+            return button->text() == QLatin1String("&Here");
+            });
+    QVERIFY(it != buttons.cend());
+    QCOMPARE((*it)->property("plainText").toString(), QStringLiteral("Here"));
+}
+
 void KUrlNavigatorTest::testInitWithRedundantPathSeparators()
 {
     KUrlNavigator temp_nav(nullptr, QUrl::fromLocalFile(QStringLiteral("/home/foo///test")), nullptr);
diff --git a/src/filewidgets/kurlnavigatorbutton.cpp b/src/filewidgets/kurlnavigatorbutton.cpp
--- a/src/filewidgets/kurlnavigatorbutton.cpp
+++ b/src/filewidgets/kurlnavigatorbutton.cpp
@@ -595,7 +595,7 @@
     const int sourceLength = source.length();
 
     QString dest;
-    dest.reserve(sourceLength);
+    dest.resize(sourceLength);
 
     int sourceIndex = 0;
     int destIndex = 0;
@@ -611,6 +611,8 @@
         ++destIndex;
     }
 
+    dest.resize(destIndex);
+
     return dest;
 }
 
diff --git a/src/filewidgets/kurlnavigatorbutton_p.h b/src/filewidgets/kurlnavigatorbutton_p.h
--- a/src/filewidgets/kurlnavigatorbutton_p.h
+++ b/src/filewidgets/kurlnavigatorbutton_p.h
@@ -54,6 +54,7 @@
 class KUrlNavigatorButton : public KUrlNavigatorButtonBase
 {
     Q_OBJECT
+    Q_PROPERTY(QString plainText READ plainText) // for the unittest
 
 public:
     explicit KUrlNavigatorButton(const QUrl &url, QWidget *parent);