I think this problem occured since AE 2022, because around 2021 and prior, I have always been able to customize the keyboard shortccuts for Zoom in/out to keys 2 and 1. But since 2022, I haven't been able to do any customizations at all.
If I removed all its shortkeys and add back the defaults (such as , and .), it will also not work. So the only way for them to work right now is if they are derived from Default.txt untouched.
I tried customizing via the keyboard shortcuts text doc too but did nothing.
Any insight/fix would be greatly appreciated.