When adding an item to Zotero through the sharing menu on iOS, and adding tags, the tag search is very confusing. First of, it covers the save button with a cancel button. Now, there are two cancel buttons - one on either side of the search field. Secondly, to actually save the item, you have to first press cancel, and then save - which is very counterintuitive.

Why is there a need for a cancel button for the search field? I think it would be better to just auto-focus on the search field when opening the search. Keep the UI static, no animations. Keep the save button in view. Add a little x inside the search field to remove the typed text.