Buttons and sliders continue being highlighted after interacting with them

How to reproduce:

1. Open any GUI with buttons e.g. the game settings or the Create New World screen
2. Click on any button or move any slider
3. Move your mouse cursor somewhere else

What should happen:

The button/slider that was interacted with should be outlined with a white border on hover. The outline should disappear after the player moves their cursor away from the button/slider.

What actually happens:

The button/slider stays highlighted until the player interacts with another button/slider