Could you try to find a reproducible case for that issue, or describe when such thing happens? I never saw flickering either. If i move my mouse all the way to the top of the screen, all the icons start flickering, i just noticed this while trying to reproduce the Modern UI popping up when moving the mouse to the lower left corner. - But this inst consistent either, like the ModernUI menu button in the bottom it just works as supposed to and other times its doing that -.- Merely reporting my experience that I haven't seen this issue at all yet with Beta 3 or before. My video card is 3-4 year old technology and the rest of the PC is about 2-year old technology. Are you running any soft you can think of that may be causing that behavior? I just doubt a 2 year-old hardware can do that. If i move my mouse all the way to the top of the screen, all the icons start flickering, i just noticed this while trying to reproduce the Modern UI popping up when moving the mouse to the lower left corner. - I tried that and got no repro, but it doesn't mean there is no such bug as you report. I suggest when you see it again, also list your Modern UI settings as well as any 3rd party windows customization tools (if any). Yea i didn't explain that too well, but thats what happens sometimes, its not there all the time, same thing goes for the bottom left Start Menu hot corner. It just happens some times, im not sure what im doing to make this happen. I'm trying to repro it again now and i just cant make it happen again