Edit Bibliography-Option
The "Edit Bibliography" is not use friendly. On the right side where all of the references are listed, I have to scroll. I'd like to be able to do an active search as well so that I'm not duplicating references. I can't even tell how it is sorted.
But, e.g., for duplicated references, you could just use the actual inserted bibliography and if there are duplicates you'd ideally then merge them in your library, not use edit bibliography to remove one, which can have all sorts of weird side-effects.
https://www.zotero.org/support/word_processor_plugin_usage#customizing_cites