Notifications displayed for events that took place before the user stoped unwatch a wiki

STEPS TO REPRODUCE

Preconditions: Two users, USER_A and USER_B are already created.

1. Login with USER_A:
2. Enable notifications
3. Unwatch the current wiki
4. Login with USER_B
5. Add a comment on Main.WebHome
6. Login with USER_A:
7. Watch the current wiki
8. Refresh the page

EXPECTED RESULTS

No notifications regarding Main.WebHome are displayed in the Notifications list.

ACTUAL RESULTS

There is notification for the comment on Main.WebHome, event that took place before USER_A watched the wiki.

If on step 7 only the page (Main.WebHome) is watched or the page and children, no notification is displayed. It appears only when start watching the wiki (when turn ON the toggle, without first turn on the toggle for page and the one for page and children, so basically at the moment when the Wiki filter type is Exclusive).