run on main thread fixes

src/iOS.Autofill/LoginSearchViewController.cs

@@ -174,7 +174,9 @@ namespace Bit.iOS.Autofill
             public override void TextChanged(UISearchBar searchBar, string searchText)
             {
                 var cts = new CancellationTokenSource();
-                Task.Run(async () =>
+                Task.Run(() =>
+                {
+                    NSRunLoop.Main.BeginInvokeOnMainThread(async () =>
                     {
                         if (!string.IsNullOrWhiteSpace(searchText))
                         {
@@ -194,6 +196,8 @@ namespace Bit.iOS.Autofill
                             _controller.TableView.ReloadData();
                         }
                         catch (OperationCanceledException) { }
+                        _filterResultsCancellationTokenSource = cts;
+                    });
                 }, cts.Token);
             }
         }