I'm getting the bug in version NeoLemmix_V12.12.1
When using the "Find Hotkeys" feature, it doesn't work with certain keys. I found out it doesn't work with "Up Arrow", "Down Arrow" and "Enter" but it could not work with more.
(https://i.imgur.com/Sfm0TzN.gif)
This shows the feature working incorrectly with "Up Arrow", "Down Arrow". Then it working correctly with the "U" key. Finally it not working with the "Enter" key. (Sorry for it being a bit small).
Known, low-priority issue. I intend to at least make attempts to fix it eventually. FWIW, Tab is another key that's known to not work.