Quicktime full screen on active display

[lutyo81]

Hi!

I have two displays. Til now full screen works like this:

if the quicktime window is on display 1, full screen is shown on display 1.

if i drag the quicktime window to display 2, and i enter full screen mode, it use display 2 for full screen.

But today, i click a display in the preferences/full screen, and i cant undo it...
i dont want to change preferences all the time...

any idea how i can use full screen mode like before this "click"?

thank you!