Image misplaced after returning from full-screen in `window.ms`

[sebnozzi]

Steps to reproduce:

• (tested on Windows; might also happen in other environments)
• Run the window.ms test program
• Program is in windowed mode. Notice the placement of the image.
• Enter full screen (by hitting SPACE)
• Exit full screen. Notice the placement of the image.

Expected:

• The image is placed in the same place as before.

Found:

• The image is not placed in the same place as before.

Screenshot before entering full-screen mode:

Screenshot after returning from full-screen, back in windowed mode: