This one comes up during every training session. I tell the group to click on such and such button and someone says, "Hey Steve, where is that button? I don't see it?" A quick glance at their pc and I see that they've got a deeper resolution than I do or the reverse.
The clever ribbon bugger stretches and contracts to show more or less of the ribbon (and tool buttons) according to the resolution of your computer. That means I might have a great resolution, and the projector supports it fine, but unfortunately someone else in the class is using a laptop with a lesser resolution. That means "my button" is bigger/smaller than "theirs".
It sure makes class fun! Since projector's often sets the "bar lower" I suppose I could force everyone to use my resolution? In a perfect world we'd all be using the same resolution? Yep yahshooeryoobetcha!