Originally Posted by mikefarny
I've tried to repro the MMB zoom issue, but so far it hasn't had any errant zooming. It could be something with the new Qt 5 event handling, but it sounds like your scroll wheel is super sensitive or the drivers are a bit flaky. Are you able to pan around with alt+MMB and also zoom in and out with the scroll wheel at the same time? (I was.)
When the issue happened i didn't have any dedicated drivers installed using the ones that come with win7 install. Then i installed Logitech's setpoint drivers and the autoscrolling is gone... but when i click the wheel to pan it zooms once a little bit.