> Hi! I definitely can't reproduce this bug. Can you still reproduce it? Which > Qt version are you currently using? This is definitely reproducible. The current Qt5 version is 5.9.2-2 on my quad G5, and 5.8.4 on G4 powerbook. Both machines are not reacting on mousewheel events at all. I've tried KDE, LXQt. GTK2/3 apps are not affected at all. -- WBR, Vladimir Berezenko