OSX: qt.qpa.fonts: Populating font family aliases took 149 ms. Replace uses of missing font family "Open Sans Semibold" with one that exists to avoid this cost.

[DonLakeFlyer]

You get this on every startup

[DonLakeFlyer]

This is because the usage of font.family: ScreenTools.demiboldFontFamily is incorrect. It should just be font.bold: true. The Open Sans Semebold font which is loaded just has the "Open Sans" font family name with bold style support. It doesn't change the name of the font family. This must have worked sometime in the past with older versions of Qt. But it doesn't work any more. All the place which use font.family for bold don't end up being bold in the ui. They all need to be changed.