I use 2 displays. One Ultra wide and furthermore a laptop display. The laptop display is skaled to 125% in windows 10 settings.
Mosaico has a problem with the skaling. If it is activated, monsaico lets a blank space on the bottom and the right side of my laptop. If skaling is set to 100% mosaico works fine.
But on my 15 inch laptop, skaling on 125% is much more comfortable for example for reading
The Ultra wide works fine and is skaled to 100%
I started testing mosaico today and befor i buy it, the issue has to be fixed.