I am listed in Django’s AUTHORS file for contributing bug fixes to the admin interface.
My first contribution (ticket #29087, shipped in Django 3.1) fixed a problem where admin inlines couldn’t be deleted after a failed form validation. If an inline had an error, the only way out was to fix the error or reload the page and lose all your work. The fix added delete buttons to unsaved inlines on validation error. Mostly JavaScript and template changes, plus Selenium tests. The Django Fellow reviewing it called it “Really nice PR. (Hard. But nice.)” and merged it after a thorough back-and-forth on commit structure and edge cases.
My second contribution (ticket #31597) fixed the new “Clear all filters” link showing incorrectly in raw_id_fields popups and dropping required URL parameters. My PR was closed in favor of a combined fix by the Django Fellow, who cherry-picked my code (preserving git authorship) into the merged PR. I then caught an additional bug in that combined PR and suggested a code change that was accepted.
No pretty screenshots for this one, but contributing to a framework I have been using for 10 years felt like giving something back.