https://bugs.kde.org/show_bug.cgi?id=445034
--- Comment #1 from yiz...@kulodgei.com --- I confirmed that this issue is still happening in the latest version that came out today. Version: 21.12 Same STEPS TO REPRODUCE Open Kalk Use your numpad to enter 5345+5456/2 Press Enter Clic on the C to clear Attempt to press anything on your numpad OBSERVED RESULT Kalk crashes after a second or two -- You are receiving this mail because: You are watching all bug changes.