I sometimes* go to add a manual album listen and hit this small peeve:
I start typing my search term into the field, and when the results come up I remember that I haven't got the right toggle on (e.g. track instead of album). So I will swap to the album toggle, which clears the field, and I have to type my search in again from scratch.

It's a minor UX quibble, but it would be nice to be able to keep the text in the field when I change the toggle.

*or maybe regularly... you can't prove anything!