It looks like this issue: QTBUG-39210 and this QTBUG-39781blacey wrote: 1) Notice that the toolbar icons do not seem to render / redraw properly when opening a new document in Part Design.
Have not read it yet but it looks like another problem with QGLWidget...
Sorry. Can't test the second one yet. Waiting for the latest build to finish. Will edit this when done.blacey wrote: 2) When adding a sketch to a surface and applying a coincident constraint, the sketch resizes to a smaller size (most likely another scaling issue)
Do you see these issues on Linux?
I see the same behaviour for number two (Linux, not high dpi). Sometimes it makes it bigger, sometimes smaller.
Qt4 build does the same. So it is either a feature or a bug