Pressing F11 on the Achievements Screens causes everything to disappear

Pressing F11 on the Achievements Screens causes everything to disappear. Sometimes it may even show broken textures.

How to reproduce:

1. Go to the Achievements Screen
2. Press F11
3. Observe How the UI behaves

Observed Results: The Achievements screens becomes invisible / broken

Expected Results: The Achievements screens should adjust correctly when full screened or windowed.