https://bugs.kde.org/show_bug.cgi?id=443951
--- Comment #43 from Awakening <lucidsunli...@yandex.ru> --- > It sounds like kwin uses wrong libkwinglutils for some reason. Oops, it is indeed my "packaging" fault. `lld` shows kwin using my system libs, instead of local ones. Pointing it to local libs with `LD_LIBRARY_PATH=./../lib ./kwin_x11 --replace`, I can't reproduce the flickering after an alt-tab, and actually see the prints. -- You are receiving this mail because: You are watching all bug changes.