diff --git a/kcmkwin/kwinrules/main.cpp b/kcmkwin/kwinrules/main.cpp
--- a/kcmkwin/kwinrules/main.cpp
+++ b/kcmkwin/kwinrules/main.cpp
@@ -248,6 +248,7 @@
 extern "C"
 KWIN_EXPORT int kdemain(int argc, char* argv[])
 {
+    qputenv("QT_QPA_PLATFORM", "xcb");
     QApplication app(argc, argv);
     app.setApplicationDisplayName(i18n("KWin"));
     app.setApplicationName("kwin_rules_dialog");
diff --git a/useractions.h b/useractions.h
--- a/useractions.h
+++ b/useractions.h
@@ -260,6 +260,8 @@
      * The Client for which the menu is shown.
      **/
     QWeakPointer<AbstractClient> m_client;
+    QAction *m_rulesOperation = nullptr;
+    QAction *m_applicationRulesOperation = nullptr;
 };
 
 class ShortcutDialog
diff --git a/useractions.cpp b/useractions.cpp
--- a/useractions.cpp
+++ b/useractions.cpp
@@ -40,6 +40,7 @@
 #include "effects.h"
 #include "platform.h"
 #include "screens.h"
+#include "shell_client.h"
 #include "virtualdesktops.h"
 #include "scripting/scripting.h"
 
@@ -318,10 +319,12 @@
     QAction *action = advancedMenu->addAction(i18n("Special &Window Settings..."));
     action->setIcon(QIcon::fromTheme(QStringLiteral("preferences-system-windows-actions")));
     action->setData(Options::WindowRulesOp);
+    m_rulesOperation = action;
 
     action = advancedMenu->addAction(i18n("S&pecial Application Settings..."));
     action->setIcon(QIcon::fromTheme(QStringLiteral("preferences-system-windows-actions")));
     action->setData(Options::ApplicationRulesOp);
+    m_applicationRulesOperation = action;
     if (!kwinApp()->config()->isImmutable() &&
             !KAuthorized::authorizeControlModules(configModules(true)).isEmpty()) {
         advancedMenu->addSeparator();
@@ -465,6 +468,15 @@
         action->setText(i18n("&Extensions"));
     }
 
+    // disable rules for Wayland windows - dialog is X11 only
+    if (qobject_cast<ShellClient*>(m_client.data())) {
+        m_rulesOperation->setEnabled(false);
+        m_applicationRulesOperation->setEnabled(false);
+    } else {
+        m_rulesOperation->setEnabled(true);
+        m_applicationRulesOperation->setEnabled(true);
+    }
+
     showHideActivityMenu();
 }