Hi

Been noticing a bug where I get white bars over my screen as I scroll – seems to happen mainly if I come out of Overprint Preview. If I float my tabs to windows or switch Overprint preview back on it cures it, but obviously this isn't actually a fix and is pretty annoying as it happens so often.

Can anyone suggest a more permanent fix please?

Thanks

Ben

OSX 10.13.6 2.8 i5 8gb - Illustrator 20.0.3