HighDPI: Wrong resizeEvents on Dockwidgets with dual monitor setup.

To reproduce this bug:

• enable high dpi scaling

  QApplication::setAttribute (Qt::AA_EnableHighDpiScaling, true);
  

• set highdpi scalefactorroundingpolicy to Passthrough

  QApplication::setHighDpiScaleFactorRoundingPolicy (Qt::HighDpiScaleFactorRoundingPolicy::PassThrough);
  

• Dual monitor setup with different scalings (e.g. 150%, 200%)

Now, if I move a dockwidget/floating toolbar from one screen to the other, it recieves multiple resize events when crossing screens, leading to extremely large/small widgets and eventually crashing the application.