User from an usergroup is not notified in page tree when page is being edited by users belonging to other groups
|Priority:||Should have||Due date:|
Say you have 3 users named A,B and C. Users A and B belong to the 'editors' group and user C belongs to the 'super-editors' group.
When user A is being editing a Typo3 page, user B can see the following notification icon in the page tree with message : "user A started editing this page x minutes ago".
BUT user C doesn't have such notification in his page tree (though he tried to reload the page tree several times, emptied cache, logged out and logged back in...).
If I add the group 'editors' to the user profile of user C, he will then see the notification.
(issue imported from #M15560)