Popup Y GUI during dialogs

[BorisZ]

I know I had lot's of questions these days, and I promise this is the last one for now:
even during dialogs my (custom) popup Y GUI keeps poping up if user moves mouse cursor to top of the screen. Do I have to remove this GUI every time dialog or conversation is started or is there some other way?

[Skio]

Check the general settings pane:

In ->    When interface disable
select -> GUIs turn off