[No Shortcut on Desktop]

Just drag the icon from thre start menu onto the desktop.

[Can't install MSIX - Please add traditional installers]

To get a desktop shortcut just drag from the start menu onto the desktop and one is created.

[Missing colour picker?]

Thanks Chris, that sorted it!

[Missing colour picker?]

I'm probably being dense but beta 1.7.0.188, at least on my PC, seems to be missing the Colour Picker from the Tools section on the left side of the screen. Reading from the top  with version 1.6.5.135 reads View Tool [H], Move Tool [V], Colour Picker , Crop Tool [C]....

In the beta it's View, Move, Crop....

 

Pressing I still brings up the Colour Picker.