Redrawing screen hide toolbars and then show them again

[marce]

Here is what happens. It is random, so i can say what is exactly the reason. It happens doing nothing too.

https://icedrive.net/s/v1yh59wT7bvFTC4x9jxCaAt6VAC9

[debraspicher]

@marce I've seen the grid flickering, but have not seen the interface flickering like that.