Who is taking care about "canvas transparency"?

[AlbertoD]

This may help:

canvas transparency - again

Because it uses Direct2D, Windows uses pseudo transparency, which means instead of being transparent, a canvas takes the color of it’s parent. My solution was to stay with 2016R2.1 where the Windows version works like the Mac version, with truly transparent canvas.

In other words, there is no real transparency in Windows with Xojo.