It’s hard to hit it with a touchpad. Sorry, this is pretty trivial stuff but …
Though this may be a similar comment to Clear Search Term with X I think this is still valid as it seems you need to actually hit the “x” quite precisely. Above or below it and you’re selecting in the text box instead.
The search needs to be more accessible. It’s hard to reach on mobile. I actually would prefer if the app opened up with search activated. I never scroll browse the vault, I just search what I want.