The upper window does not subtract the height of the menubar.

[elviscai]

So the edges of the upper left (0 0 50 50) and lower left windows (0 50 50 100) overlap.

[pawelgrzybek]

Hi.

Thanks for reporting. This is true but it should be easy to fix it. I release an update soon, probably next upcoming weekend.

Thanks for reporting 🥑