I'm a bit at a loss to explain this behavior. I've done it twice today and I can tell you what I did to make it happen, but I cant seem to make it happen again when I want to.

I move my mouse up to select a tab. Both times I've felt like I've clicked and dragged for a few pixels. And ... all my toolbars turn off. Also, my locals and globals windows get closed. I have dual monitors and I like to have them up on the second screen, and usually they auto hide nicely when not in debug mode, but after this event they disappear and turning them back on has them docked into the main screen. I then have to drag out and resize.

Is this a known problem? Has anyone else come across this?

Not a biggie ... but annoying all the same. Will post back if it happens again.

Obviously your mouse sends doubleclick to the tabs and causes switching to Full screen mode, that's why all windows are sliding off and toolbars become hidden.

Is there any way to disable this 'double-click for full-screen' behavior?

I seem to do it all the time and it can get really annoying.

Cheers