We've recently noticed that when selecting a Callout, its Clip Volume displays as usual but there is also a 2D "frame" that displays offset or separated from the Clip Volume. Is this the boundary of the Saved View? If so, is there any way to "resync" them?
After placing a Callout the process automatically generates both a Clip Volume and a Saved View. It is possible for the Saved View's boundary to become separated from the Clip Volume if the boundary's standard rectangular edit handles (1) are used to stretch it rather than the Clip Volume's large blue edit handles (2).
If this happens, you can realign them by first enabling Constructions from View Attributes:
Then right-clicking over the Saved View boundary and choosing Align View to Clip Volume.
After doing so, the Saved View boundary and Clip Volume should be aligned.
Note: It is considered a best practice to always use the Clip Volume's edit handles for modifying the extents of the Drawing View.