Switching from Design to Edit mode via ALT+TAB shows wrong popup on multi-monitor setup

Consider a two-monitor setup, Qt Creator on the left monitor (which is the second in case this is important).

When switching from a ui file to a regular header using the ALT+Tab key sequence, the popup gets shown on the right monitor at the "correct" position instead of the left one.
However, when opening the popup from the text editor, it works correctly.

Tested on Windows 7 64bit.