here is a screenshot, this appears for a moment (I had to record a video from the screen because with screenshot I couldn't capture this - nevertheless the issue shows different random screen when not recording video). 

It's supposed to be black, as it becomes after loading, but this is annoying. 

I'm writing an application dealing with many arraylist with custom classes, maybe this amount of work in the setup is the cause? 

I can't repeat the issue just loading an image...

oh and this didn't happen until i was on 2.0b6 !!!!