diff --git a/lib/ui/routes/home_route.dart b/lib/ui/routes/home_route.dart
index 3b3bf603..716c8a20 100644
--- a/lib/ui/routes/home_route.dart
+++ b/lib/ui/routes/home_route.dart
@@ -46,7 +46,7 @@ class _HomePageState extends State<HomePage> {
 
     WidgetsBinding.instance.addPostFrameCallback((_) async {
       await Future.delayed(const Duration(milliseconds: 500), () {
-        if (!shouldShowcase || !mounted || context.findAncestorWidgetOfExactType<ShowCaseWidget>() == null) return;
+        if (!shouldShowcase || !context.mounted || context.findAncestorWidgetOfExactType<ShowCaseWidget>() == null) return;
         ShowCaseWidget.of(context).startShowCase([showCaseKey]);
       });
     });
diff --git a/lib/ui/routes/main_route.dart b/lib/ui/routes/main_route.dart
index c1e63ed1..2ecc4586 100644
--- a/lib/ui/routes/main_route.dart
+++ b/lib/ui/routes/main_route.dart
@@ -132,7 +132,7 @@ class RouteWidgetState extends State<RouteWidget> with TickerProviderStateMixin
       resizeToAvoidBottomInset: false,
       body: PlatformWillPopScope(
         canPop: canPop,
-        onPopInvoked: (didPop) {
+        onPopInvoked: (didPop, _) {
           if (didPop) return;
           if (children.every((e) => e is HomePage) && tabController.length > 1 && tabController.index == tabController.length - 1) {
             int newIndex = tabController.previousIndex;
diff --git a/lib/ui/routes/setup_route.dart b/lib/ui/routes/setup_route.dart
index 940ee751..66357835 100644
--- a/lib/ui/routes/setup_route.dart
+++ b/lib/ui/routes/setup_route.dart
@@ -67,7 +67,7 @@ class _SetupPageState extends State<SetupPage> {
   @override
   Widget build(BuildContext context) {
     return PopScope(
-      onPopInvoked: (didPop) {
+      onPopInvokedWithResult: (didPop, _) {
         if (!didPop) return;
         SetupManager.dispose();
       },
diff --git a/lib/ui/routes/subject_edit_route.dart b/lib/ui/routes/subject_edit_route.dart
index 839d5eca..bb683f9a 100644
--- a/lib/ui/routes/subject_edit_route.dart
+++ b/lib/ui/routes/subject_edit_route.dart
@@ -75,7 +75,7 @@ class _SubjectEditRouteState extends SpinningFabPage<SubjectEditRoute> {
     final String title = widget.creationType == CreationType.edit ? translations.edit_subjectOther : translations.add_subjectOther;
 
     return PopScope(
-      onPopInvoked: (didPop) {
+      onPopInvokedWithResult: (didPop, _) {
         if (!didPop) return;
         ScaffoldMessenger.of(context).removeCurrentSnackBar();
       },
diff --git a/lib/ui/routes/subject_route.dart b/lib/ui/routes/subject_route.dart
index 2d7dce9e..6f6b8984 100644
--- a/lib/ui/routes/subject_route.dart
+++ b/lib/ui/routes/subject_route.dart
@@ -153,12 +153,13 @@ class _SubjectRouteState extends SpinningFabPage<SubjectRoute> {
                             leadingText: testData[index].name,
                             trailingText: testData[index].toString(),
                             enableEqualLongPress: true,
-                            onTap: () async {
+                            onTap: () {
                               if (widget.term.isYearOverview) return;
 
                               showMenuActions<MenuAction>(context, MenuAction.values, [translations.edit, translations.delete]).then((result) {
                                 switch (result) {
                                   case MenuAction.edit:
+                                    if (!context.mounted) return;
                                     showTestDialog(context, widget.subject, test: testData[index]).then((_) => refreshYearOverview());
                                   case MenuAction.delete:
                                     heavyHaptics();
diff --git a/lib/ui/routes/year_route.dart b/lib/ui/routes/year_route.dart
index 89c66a21..a565f83a 100644
--- a/lib/ui/routes/year_route.dart
+++ b/lib/ui/routes/year_route.dart
@@ -128,6 +128,7 @@ class _YearRouteState extends SpinningFabPage<YearRoute> {
 
   void showPopupActions(BuildContext context, int index, Year year) {
     showMenuActions<YearAction>(context, YearAction.values, [translations.select, translations.edit, translations.delete]).then((result) {
+      if (!context.mounted) return;
       switch (result) {
         case YearAction.select:
           heavyHaptics();
diff --git a/lib/ui/widgets/list_widgets.dart b/lib/ui/widgets/list_widgets.dart
index f0200d92..d292f4df 100644
--- a/lib/ui/widgets/list_widgets.dart
+++ b/lib/ui/widgets/list_widgets.dart
@@ -246,7 +246,7 @@ class _SubjectTileState extends State<SubjectTile> {
 
     WidgetsBinding.instance.addPostFrameCallback((_) async {
       await Future.delayed(const Duration(milliseconds: 500), () {
-        if (!widget.shouldShowcase || !mounted || context.findAncestorWidgetOfExactType<ShowCaseWidget>() == null) return;
+        if (!widget.shouldShowcase || !context.mounted || context.findAncestorWidgetOfExactType<ShowCaseWidget>() == null) return;
         ShowCaseWidget.of(context).startShowCase([showCaseKey1, showCaseKey2]);
       });
     });
@@ -298,6 +298,7 @@ class _SubjectTileState extends State<SubjectTile> {
           showMenuActions<MenuAction>(context, MenuAction.values, [translations.edit, translations.delete]).then((result) {
             switch (result) {
               case MenuAction.edit:
+                if (!context.mounted) return;
                 showSubjectDialog(
                   context,
                   index1: widget.index1,
diff --git a/lib/ui/widgets/misc_widgets.dart b/lib/ui/widgets/misc_widgets.dart
index 9c25053b..03aad682 100644
--- a/lib/ui/widgets/misc_widgets.dart
+++ b/lib/ui/widgets/misc_widgets.dart
@@ -156,7 +156,7 @@ class PlatformWillPopScope extends StatelessWidget {
     required this.child,
   });
 
-  final void Function(bool)? onPopInvoked;
+  final void Function(bool, dynamic)? onPopInvoked;
   final bool? canPop;
   final Widget child;
 
@@ -164,7 +164,7 @@ class PlatformWillPopScope extends StatelessWidget {
   Widget build(BuildContext context) {
     return !isiOS
         ? PopScope(
-            onPopInvoked: onPopInvoked,
+            onPopInvokedWithResult: onPopInvoked,
             canPop: canPop ?? true,
             child: child,
           )
diff --git a/lib/ui/widgets/settings_tiles.dart b/lib/ui/widgets/settings_tiles.dart
index 812e6bfc..81d81c0f 100644
--- a/lib/ui/widgets/settings_tiles.dart
+++ b/lib/ui/widgets/settings_tiles.dart
@@ -138,6 +138,7 @@ class ImportSettingsTile extends StatelessWidget {
       subtitle: translations.import_description,
       onTap: () => importData().then((success) {
         if (!success) heavyHaptics();
+        if (!context.mounted) return;
 
         ScaffoldMessenger.of(context).showSnackBar(
           SnackBar(