Leaving and rejoining the realtime editing session using the checkbox doesn't work properly

STEPS TO REPRODUCE

1. Login as Admin
2. Install XWiki Platform - Realtime - Wiki - UI
3. If the case, go to 'XWikiPreferences' page, edit it in object mode and add an object of type 'XWiki.EditorBindingClass' and set:

   Data Type: 'org.xwiki.rendering.syntax.SyntaxContent#text'
   Role Hint: 'realtime-wiki'

1. Create an user (e.g. U1)
2. Edit a page in Wiki mode and the same page (in Wiki mode as well) with user U1 in a Private Window or another browser
3. With Admin, un-tick "Allow Realtime Collaboration"
4. Tick it back
5. With user U1, un-tick "Allow Realtime Collaboration" as well
6. Tick it back

EXPECTED RESULTS

When the collaborative session is left and then rejoined (using the checkbox) by Admin, the list of users and the lag are not displayed back on the toolbar.

Also, when the user U1 leaves and rejoins the collaborative session, "Synchronizing" is displayed in the left side of the toolbar and the Lag in the right side, but the "Synchronizing" text is not updated with the list of users.