Fullscreen bug

Put the summary of the bug you're having here
a fullscreen bug
What I expected to happen was...:
Describe what you thought should happen here
i want it to fullscreen
What actually happened was...:
Describe what happened here
it did turn fullscreen but it turned black and anytime i went in its like that
Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...
3. ...