Buttons moving around on screen, launcher unusable

I was switching to a non-Forge launcher profile to report another bug...when everything glitched, see image. Now whenever I click, it duplicates part of the window. The launcher has not crashed, I can still click on things, but the buttons are barely visible.

After restarting the launcher, this still happens whenever I am in the Game Output tab.

This is probably a duplicate, I don't know how something like this would go unnoticed. I just couldn't find this when searching.