Trying out recurring tickets, seems like I can't remove a contact from the recurring ticket (not an actual ticket now in the system). Either click on tickets (for all clients), click on dots, edit the ticket, set contact to - Contact -, save, get green box it's updated, click edit again, contact still on it.
If I go into the client, click on recurring tickets go through same edit, set to - Contact - save, get green updated box, go back in, Contact is still listed.
Tested this in the demo (test recurring ticket) and it does the same thing (I swear, I'm learning at making this easier for you).
Once a ticket exists (from the recurring) that can be modified, contact removed, fine.