Some keyboard inputs don't work when hovering over scrollbar

Check version

• I'm running the latest version of Path of Building and I've verified this by checking the changelog

Check for duplicates

• I've checked for duplicate open and closed issues by using the search function of the issue tracker

What platform are you running Path of Building on?

Windows

How is Path of Building expected to behave?

Keys like Enter, Delete or Backspace don't fulfill their expected function when hovering over a scrollbar. When deleting an item from the All items tab or typing lines into Custom Modifiers, I expect the keys to work the same, if I hover over this GUI's element's scrollbar with my pointer or not.

How does Path of Building behave?

The keyboard presses have no discernable effect. There's some visual feedback of things happening when I press Delete in the All Items tab when I have an item selected and hovering over its scrollbar.

How to reproduce the issue

1. Have enough lines in the element (e.g. the custom modifiers or all items tab) to get a scrollbar.
2. Type some text
3. Hover over this element's scrollbar with your mouse (just the one of this element reproduces this issue, the others are fine)
4. Use any of these keys (Enter, Delete or Backspace) as you'd naturally do such as when making a linebreak or deleting a word.

PoB for PoE1 build code

No build needed as it works on any of my setups. I've confirmed this bug on another Windows machine as well.

Screenshots

Reproduce the issue on Windows in the Custom Modifiers or All Items view by hovering over that element's scrollbar and pressing Enter, Delete, or Backspace. Trace the GUI input handling for the affected scrollbar and verify that these keys retain their normal behavior while the pointer is over it.