The issue is present in 1.30.0-wmf.4.
The screenshot is an illustration of the following scenario:
- On any Flow board click to Thank some users in one post - all clicked 'thanks' will change to 'thanked'.
- In the same post click on any Reply and after typing in the post, save the post.
- All previously displayed 'thanked'' will changed to 'thank'.
- 'Thanked' changes to 'Thank' when a topic title or a summary are edited. Editing a board description does not affect the status of 'Thank' action.
- No duplicate notifications are sent.