Minecraft version: 1.16.5
CC: Tweaked version: 1.16.4-1.95.3

The Border of the Computer GUIs grab small UV's despite having enough to work with within the texture

Ingame:

Source Texture:

Pocket computers are only broken on the top and sides

This is mostly working as intended - I believe it changed in 514db30. As computer terminals are now resizable (of sorts), we need to handle larger areas than the texture supports.

I'm open to changing how this is implemented a little bit, but until 1.17 drops (and we might be able to do something with shaders), there's probably a limit of how much can be changed.