Originally Posted by Unregistered

This may sound odd, but have you tried scrolling the page? Whenever it "freezes" for me scrolling somehow unfreezes it. Mind you this was something that started happening a few weeks ago.

Same here.

At first, I thought it was only appearing when I used Remote Desktop, but then it happened on direct control.
Mainly when I switch tab/app.
Just scroll down and it unlocks the display.