I have the latest version of DTTG installed on iOS 15.3 and iPadOS 15.3. When I in Safari choose “Share sheet” → “DEVONthink” → and choose the three dots in the bottom left corner (for tags) → and I start writing the first letter in the tag section, then the DEVONthink windows closes down immediately and returns to the “Share sheet”.
So I can’t add tags, when I use “Share sheet” in Safari in either iOS or iPadOS.
(The Share sheet function works fine, if I don’t try to add tags).