What i did / Steps to reproduce

Use Ctrl+Shift+Tab to switch out to a different tab. When you switch back, you'll be moving downward infdefinitely unless you think to press shift.

Expected result

Switching tabs without weird stuff happening, given that keybinds are a productivity and accessibility feature.

Actual result

Since there was a keydown for shift, but the keyup was when I was on another tab, I kept moving down constantly until I hit shift. This is a very unintuitive solution to the problem of moving down when you're not supposed to be, so it took me many instances of this happening to realize how to stop it.

Context

BlueMap Version:

Chrome 111

Doesn't matter, front-end issue

(fyi: the frontend change too with the bluemap versions :p)

Closing in favor of #408 :)