Marked as affected 6.5, could also affect earlier versions. I did not test it.
Steps to reproduce:
1. Open a window with a menu.
2. Open the menu.
3. Use Ctrl+Shift+Left/Right Arrow to move the window to another (different DPI) screen
1. The menu should move along with the window.
2. The window gets scaled appropriately for the new DPI.
1. The menu stays behind where it was
2. The window changes look in unexpected ways.
See attached video.