https://bugs.kde.org/show_bug.cgi?id=373839
--- Comment #6 from Kristian Karl <kristian.hermann.k...@gmail.com> --- I have seen this problem on 2 different 4K screens. One connected to my midtower machine. And last, my laptop Lenovo Thinkpad X240 connected using Display Port to a BenQ BL3201PT 32-inch Ultra HD, running 3840x2160 30 FPS It does not matter what size I have on the thumbnails, 128 or 256 px. -- You are receiving this mail because: You are watching all bug changes.