diff --git a/lib/src/widgets/quill/quill_controller.dart b/lib/src/widgets/quill/quill_controller.dart
index 6458bc0a..7f95a6cf 100644
--- a/lib/src/widgets/quill/quill_controller.dart
+++ b/lib/src/widgets/quill/quill_controller.dart
@@ -303,7 +303,9 @@ class QuillController extends ChangeNotifier {
       var shouldRetainDelta = toggledStyle.isNotEmpty &&
           delta.isNotEmpty &&
           delta.length <= 2 &&
-          delta.last.isInsert;
+          delta.last.isInsert &&
+          // pasted text should not use toggledStyle
+          (data is! String || data.length < 2);
       if (shouldRetainDelta &&
           toggledStyle.isNotEmpty &&
           delta.length == 2 &&