No there is no dialog box more then agk editor when running.
This also only happens in fullscreen not in windowed that use the entire screen ?
Its extremely weird but i rewrote the entire map selection screen to workaround the bug now instead.
I found this only because the next page button did not work because of this on that screen.
I could you send you my game code if you want to check the bug yourself?
Iam not that often on the forum nowdays because i have my hands full with a few updates and a new collabiration with a musican called LukHash from the uk.