Lock Ribbon Bar
The ribbon can be locked which should avoid any reaction (collapsing, minimization, etc.) to mouse clicks by removing the "check mark" from the "Minimize the ribbon" option.
With that unchecked. double-click on the word "Map", just below your undo button. You'll notice your ribbon still collapses.
That check box doesn't actually lock the ribbon. It just does the same thing as the arrow at the far right of the ribbon: It collapses & un-collapses the ribbon.
Double-clicking the header for a ribbon tab (like the word "Map" I alluded to above) will also collapse & un-collapse the ribbon.
What @EvanMyers1 is asking for (I believe) is a way to disable that double-click functionality, presumably because they keep accidentally doing it. I sometimes do the same thing by mistake, and always find it mildly tedious.
To my knowledge, it's not possible to disable that functionality, though.
