When I use Windows 11's "Snap to Half Screen" on a vertically-oriented monitor, about 2 inches of the Compass window are cut off-screen on the right, including the red X to close the window.

Most apps don't have this issue. In fact, of all my apps, Compass is the only one with the problem.

Also, Compass does not show this problem when I snap to full screen. In that case it shrinks the width properly to fit.