• Tag icons are missing in the contacts list that are shared from another account.
• Checkboxes are not checked, even though tags are existing. Therefore it's not possible to remove a tag from a shared contact.
• Adding tags to a shared contacts by checking the checkbox seems to work (but after that the checkbox is still unchecked as explained in the point above).
• Searching for tags does work for shared contacts.

Does anybody know of a solution or workaround to that problem?

Is this a known issue and is there a plan to fix it?

I have looked at the requests of the UI and noticed the following, which might be part of the problem:

• If you are the owner of the contact, the request response contains tag ids and names:

  {"id":"502","l":"7","tn":"tag1,tag2","t":"880,881","d":1729631937000,...}

• For shared contacts only the tag names are included (field "t" is missung):

  {"id":"208e0ac6-1b95-4a07-af1f-e4441b14117b:3169","l":"208e0ac6-1b95-4a07-af1f-e4441b14117b:7","tn":"tag1,tag2","d":1729631862000,...}

Let me know if you need more information. I'm happy to help get that issue fixed.