https://bugs.kde.org/show_bug.cgi?id=351839
--- Comment #12 from a.skemb...@gmail.com --- I was informed I came across this bug, see https://forum.kde.org/viewtopic.php?f=111&t=130565 for the investigation that took place. In order to reproduce the bug consistently, using an aurorae-based theme and a dual monitor set up, I do the following: 1) Open a VM in Virtualbox in the second monitor and close Virtualbox Manager so that only the VM window is in the second monitor, maximized. 2) Open Firefox (via taskbar icon). Firefox will try to open on the main monitor and kwin will crash, with no DrKonqi to help out. Breeze decorations don't have this problem. The VM window needs to be the last active window before opening firefox, otherwise it's not triggered. I have attached a backtrace using gdb, but some symbols are missing, not sure from which packages. I am on OpenSUSE Tumbleweed, with KWin 5.5.3. Can reproduce consistently on Intel graphics laptop and ATI graphics desktop. -- You are receiving this mail because: You are watching all bug changes.