On Qt5, using pinch will inevitably cause tilt. It's annoying, so it is disabled by default.
In the future, it's best to introduce some kind of threshold to overcome for the tilt to be triggered.
@peterl94 said anaconda's Qt doesn't offer private headers. The
definitions used have almost no code associated with them, I simply
copied them to the cpp file.
See thread "ana(conda) windows packaging", starting from this post:
https://forum.freecadweb.org/viewtopic.php?f=4&t=21405&start=70#p167370