diff --git a/lib/apps_list/cubit/apps_list_cubit.dart b/lib/apps_list/cubit/apps_list_cubit.dart
index 178341d..04a7aaf 100644
--- a/lib/apps_list/cubit/apps_list_cubit.dart
+++ b/lib/apps_list/cubit/apps_list_cubit.dart
@@ -184,7 +184,7 @@ class AppsListCubit extends Cubit<AppsListState> {
     window = await _refreshWindowProcess(window);
     log.i('Window after interaction: $window');
 
-    if (!successful) await _addInteractionError(window, interaction);
+    if (!successful) await addInteractionError(window, interaction);
 
     // Create a copy of the state of windows, with this window's info refreshed.
     final windows = [...state.windows];
@@ -327,7 +327,10 @@ class AppsListCubit extends Cubit<AppsListState> {
   }
 
   /// Refresh the process status and add an [InteractionError].
-  Future<void> _addInteractionError(
+  ///
+  /// Visible so it can be used by the debug menu.
+  @visibleForTesting
+  Future<void> addInteractionError(
     Window window,
     InteractionType interaction,
   ) async {
diff --git a/lib/apps_list/widgets/custom_app_bar.dart b/lib/apps_list/widgets/custom_app_bar.dart
index 1116be3..a3658b8 100644
--- a/lib/apps_list/widgets/custom_app_bar.dart
+++ b/lib/apps_list/widgets/custom_app_bar.dart
@@ -1,3 +1,4 @@
+import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_bloc/flutter_bloc.dart';
 import 'package:flutter_gen/gen_l10n/app_localizations.dart';
@@ -46,6 +47,7 @@ class CustomAppBar extends StatelessWidget implements PreferredSizeWidget {
       actions: [
         updateAvailableButton,
         const _WaylandWarningButton(),
+        const _DebugButton(),
         settingsButton,
       ],
     );
@@ -208,3 +210,42 @@ class _WaylandWarningButton extends StatelessWidget {
     );
   }
 }
+
+/// A button that shows the debug menu.
+class _DebugButton extends StatelessWidget {
+  const _DebugButton();
+
+  @override
+  Widget build(BuildContext context) {
+    if (!kDebugMode) return const SizedBox();
+
+    final appsListCubit = context.read<AppsListCubit>();
+
+    return MenuAnchor(
+      builder: (context, controller, child) {
+        return IconButton(
+          onPressed: () {
+            if (controller.isOpen) {
+              controller.close();
+            } else {
+              controller.open();
+            }
+          },
+          icon: const Icon(Icons.bug_report),
+        );
+      },
+      menuChildren: [
+        MenuItemButton(
+          child: const Text('Add Interaction Error'),
+          onPressed: () async {
+            // ignore: invalid_use_of_visible_for_testing_member
+            await appsListCubit.addInteractionError(
+              appsListCubit.state.windows.first,
+              InteractionType.suspend,
+            );
+          },
+        ),
+      ],
+    );
+  }
+}