We'll create fresh WordPress site with GA Admin Taxonomy Search installed. You have 20 minutes to test the plugin after that site we'll be deleted.
GA Admin Taxonomy Search is a WordPress plugin for searching/filtering items in the category/term meta box.
It works for every category and custom taxonomy and is compatible with Gutenberg.
That’s exactly what GA Admin Taxonomy Search helps you to do.
Firstly, you should see a new field above your category/term checboxes (in meta box)
Now type the first letters of a category/term in the search bar that you want to search and you’ll immediately see the filtered results (no need to submit).
The search process works real-time, less than a second.