Here’s one for Steve’s Department of Subtle. Prior to Revit 2012, when you assigned a scope box to a view and the crop region adjusted based on that, the view control bar still showed the crop region icon as follows:
When a view is assigned to a scope box however, you cannot disable the crop region, even though the icon leads you to believe you could (and so does the properties palette). I have no doubt this confused some users, myself included.
To make matters worse, if the crop region was “disabled” and then you removed the scope box from being assigned to the view, the crop was still in effect. To get it to function properly, you had to re-enable it and disable it once again.
In Revit 2012, the crop icon is now greyed out if a scope box is assigned to a view in both the view control bar and the properties palette. I think these subtle changes help users realize why those shape handles are missing from the crop region!
Now once you remove the scope box, these controls are enabled and with one more click, the crop region can be disabled. Thanks Factory!