https://bugs.kde.org/show_bug.cgi?id=397834
--- Comment #33 from mthw0 <matejm98m...@gmail.com> --- After further testing: Using Webrender or OpenGL makes Firefox stop responding after an attempt to resize, so I switched to 'Basic'. Runing FF Nightly with Basic makes it really (unusably) slow (CPU is not at 100%) and also there are lots of screen artifacts (like repeated text). Resizing the window most often leads to a black window, but snapping(?) the window to left or right usually works correctly (same with maximizing). Using CSD or SSD makes almost no difference, only with CSD there is a 20px (may vary) invisible border around the window, when snapped(?) to a side. -- You are receiving this mail because: You are watching all bug changes.