...

lib/widgets/members_dialog.dart

@@ -80,16 +80,22 @@ class _MembersDialogState extends State<MembersDialog> {
       final List<String> newMembers = [...widget.list.members, user.id];
       await apiService.updateList(widget.list.id, members: newMembers);
 
-      setState(() {
-        widget.list.members = newMembers;
-        _userEmails[user.id] = user.data['email'] as String;
-        _emailCtl.clear();
-        _hasChanges = true;
-      });
+      if (mounted) {
+        setState(() {
+          widget.list.members = newMembers;
+          _userEmails[user.id] = user.data['email'] as String;
+          _emailCtl.clear();
+          _hasChanges = true;
+        });
+      }
     } catch (e) {
-      setState(() => _error = e.toString());
+      if (mounted) {
+        setState(() => _error = e.toString());
+      }
     } finally {
-      setState(() => _isLoading = false);
+      if (mounted) {
+        setState(() => _isLoading = false);
+      }
     }
   }
 
@@ -128,17 +134,29 @@ class _MembersDialogState extends State<MembersDialog> {
           .toList();
       await apiService.updateList(widget.list.id, members: newMembers);
 
-      setState(() {
-        widget.list.members = newMembers;
-        _hasChanges = true;
-      });
+      if (mounted) {
+        setState(() {
+          widget.list.members = newMembers;
+          _hasChanges = true;
+        });
+      }
     } catch (e) {
-      setState(() => _error = e.toString());
+      if (mounted) {
+        setState(() => _error = e.toString());
+      }
     } finally {
-      setState(() => _isLoading = false);
+      if (mounted) {
+        setState(() => _isLoading = false);
+      }
     }
   }
 
+  @override
+  void dispose() {
+    _emailCtl.dispose();
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     final bool isOwner = widget.list.owner == apiService.userId;