Safari full screen tilted
When I full screen Youtube and Netflix the image tilts as soon as my cursor disappears. It´s impossible to screenshot as it goes back to normal as soon as I touch a button. Only occurs in Safari. Does anyone know how to fix this?
I´m on macOS High Sierra 10.13.4 and Safari 11.1, but this has also occurred on earlier versions.
MacBook Air, macOS High Sierra (10.13.4)