Blackish rectangulars top en bottom left
My Thunderbird does look strange, though it works alright. It annoys me, there are black-gray rectanguler spots left top and bottom. It dissapears when in full screen mode. It is not in any other program. I add a picture. Is there anybody who knows how to solve this. Thanks, Hans, Netherlands
ყველა პასუხი (1)
Try disabling Hardware Acceleration in Thunderbird. This feature is intended to improve performance, but it can conflict with some computer's video subsystems, and in my experience doesn't really make much of a performance difference anyway.
That setting can be found at <Settings | General> - scroll down to the bottom and untick the "Use hardware acceleration when available" option.