fix.patch

diff --git a/sky/packages/sky/lib/src/widgets/framework.dart b/sky/packages/sky/lib/src/widgets/framework.dart
index 858bdfe..f7e0d29 100644
--- a/sky/packages/sky/lib/src/widgets/framework.dart
+++ b/sky/packages/sky/lib/src/widgets/framework.dart
@@ -522,8 +522,7 @@ abstract class Widget {
 
 bool _canSync(Widget a, Widget b) {
   return a.runtimeType == b.runtimeType &&
-         a.key == b.key &&
-         (a._generation == 0 || b._generation == 0);
+         a.key == b.key;
 }