diff --git a/src/scriptengines/qml/plasmoid/appletinterface.cpp b/src/scriptengines/qml/plasmoid/appletinterface.cpp
--- a/src/scriptengines/qml/plasmoid/appletinterface.cpp
+++ b/src/scriptengines/qml/plasmoid/appletinterface.cpp
@@ -26,6 +26,7 @@
 #include <QIcon>
 #include <QSignalMapper>
 #include <QTimer>
+#include <QVersionNumber>
 
 #include <kactioncollection.h>
 #include <QDebug>
@@ -828,6 +829,29 @@
             emit applet()->contextualActionsAboutToShow();
             ci->addAppletActions(desktopMenu, applet(), event);
 
+            // this is a workaround where Qt will fail to realise a mouse has been released
+            // this happens if a window which does not accept focus spawns a new window that takes focus and X grab
+            // whilst the mouse is depressed
+            // https://bugreports.qt.io/browse/QTBUG-59044
+            // this causes the next click to go missing
+
+            // by releasing manually we avoid that situation
+            auto ungrabMouseHack = [this]() {
+                if (window() && window()->mouseGrabberItem()) {
+                    // FIXME event forge thing enters press and hold move mode :/
+                    window()->mouseGrabberItem()->ungrabMouse();
+                }
+            };
+
+            // pre 5.8.0 QQuickWindow code is "item->grabMouse(); sendEvent(item, mouseEvent)"
+            // post 5.8.0 QQuickWindow code is sendEvent(item, mouseEvent); item->grabMouse()
+            if (QVersionNumber::fromString(qVersion()) > QVersionNumber(5, 8, 0)) {
+                QTimer::singleShot(0, this, ungrabMouseHack);
+            } else {
+                ungrabMouseHack();
+            }
+            // end workaround
+
             if (!desktopMenu->isEmpty()) {
                 desktopMenu->setAttribute(Qt::WA_DeleteOnClose);
                 desktopMenu->popup(e->globalPos());
diff --git a/src/scriptengines/qml/plasmoid/containmentinterface.cpp b/src/scriptengines/qml/plasmoid/containmentinterface.cpp
--- a/src/scriptengines/qml/plasmoid/containmentinterface.cpp
+++ b/src/scriptengines/qml/plasmoid/containmentinterface.cpp
@@ -27,6 +27,8 @@
 #include <QQmlExpression>
 #include <QQmlProperty>
 #include <QMimeData>
+#include <QVersionNumber>
+#include <QTimer>
 
 #include <kactioncollection.h>
 #include <kauthorized.h>
@@ -995,9 +997,28 @@
     desktopMenu->setAttribute(Qt::WA_TranslucentBackground);
     //end workaround
 
-    if (window() && window()->mouseGrabberItem()) {
-        window()->mouseGrabberItem()->ungrabMouse();
+    // this is a workaround where Qt will fail to realise a mouse has been released
+    // this happens if a window which does not accept focus spawns a new window that takes focus and X grab
+    // whilst the mouse is depressed
+    // https://bugreports.qt.io/browse/QTBUG-59044
+    // this causes the next click to go missing
+
+    // by releasing manually we avoid that situation
+    auto ungrabMouseHack = [this]() {
+        if (window() && window()->mouseGrabberItem()) {
+            // FIXME event forge thing enters press and hold move mode :/
+            window()->mouseGrabberItem()->ungrabMouse();
+        }
+    };
+
+    // pre 5.8.0 QQuickWindow code is "item->grabMouse(); sendEvent(item, mouseEvent)"
+    // post 5.8.0 QQuickWindow code is sendEvent(item, mouseEvent); item->grabMouse()
+    if (QVersionNumber::fromString(qVersion()) > QVersionNumber(5, 8, 0)) {
+        QTimer::singleShot(0, this, ungrabMouseHack);
+    } else {
+        ungrabMouseHack();
     }
+    // end workaround
 
     QPoint pos = event->globalPos();
     if (window() && m_containment->containmentType() == Plasma::Types::PanelContainment) {