diff --git a/src/acme/acmeplugin.cpp b/src/acme/acmeplugin.cpp
index 026c360..e4d7544 100644
--- a/src/acme/acmeplugin.cpp
+++ b/src/acme/acmeplugin.cpp
@@ -193,7 +193,13 @@ AcmeView::AcmeView(AcmePlugin *plugin, KTextEditor::MainWindow *mainWindow)
     qApp->installEventFilter(this);
 }
 
-AcmeView::~AcmeView() = default;
+AcmeView::~AcmeView()
+{
+    // Remove the application event filter we installed on qApp; QObject only
+    // auto-removes filters installed on itself. Without this, a plugin
+    // unload/reload leaves qApp with a dangling filter pointer -> crash.
+    qApp->removeEventFilter(this);
+}
 
 QAction *AcmeView::findActionByName(const QString &nameOrText) const
 {
diff --git a/src/palette/paletteplugin.cpp b/src/palette/paletteplugin.cpp
index 74e0229..dae25fb 100644
--- a/src/palette/paletteplugin.cpp
+++ b/src/palette/paletteplugin.cpp
@@ -124,6 +124,10 @@ PaletteView::PaletteView(PalettePlugin *plugin, KTextEditor::MainWindow *mainWin
 
 PaletteView::~PaletteView()
 {
+    // We installed this on qApp; QObject only auto-removes filters installed on
+    // itself, so remove ours explicitly. Otherwise, on plugin unload/reload
+    // qApp keeps a dangling filter pointer and the next event crashes.
+    qApp->removeEventFilter(this);
     delete m_palette;
 }
 
diff --git a/src/radial/radialplugin.cpp b/src/radial/radialplugin.cpp
index 11a53bd..b8f689d 100644
--- a/src/radial/radialplugin.cpp
+++ b/src/radial/radialplugin.cpp
@@ -83,6 +83,10 @@ RadialView::RadialView(RadialPlugin *plugin, KTextEditor::MainWindow *mainWindow
 
 RadialView::~RadialView()
 {
+    // Remove the application event filter we installed on qApp; QObject only
+    // auto-removes filters installed on itself. Without this, a plugin
+    // unload/reload leaves qApp with a dangling filter pointer -> crash.
+    qApp->removeEventFilter(this);
     delete m_radial;
 }
 
diff --git a/src/switch/switchplugin.cpp b/src/switch/switchplugin.cpp
index c928d9b..e83148d 100644
--- a/src/switch/switchplugin.cpp
+++ b/src/switch/switchplugin.cpp
@@ -143,6 +143,10 @@ SwitchView::SwitchView(SwitchPlugin *plugin, KTextEditor::MainWindow *mainWindow
 
 SwitchView::~SwitchView()
 {
+    // Remove the application event filter we installed on qApp; QObject only
+    // auto-removes filters installed on itself. Without this, a plugin
+    // unload/reload leaves qApp with a dangling filter pointer -> crash.
+    qApp->removeEventFilter(this);
     delete m_filePalette;
     delete m_symbolPalette;
 }