Which EES job (or similar process) is responsible for restoring the community memberships?"

Summary:

After every system update it happens that the communities I’m enrolled in suddenly are no longer visible – except for the community “Aktuell”.
This probably applies to all users.

Example:

• Before the update I see 10 communities (Aktuell, Duisburg, Hof, HZD, etc.)
• After the update I only see “Aktuell”
• I check the settings and find that everything is still as before
• Just for fun, I enroll in the Duisburg community a second time
• And suddenly I can see all 10 communities again
• For other users, however, nothing has changed - they still can not see their communities, even though they are registered