OK, here's my problem. This is a sheet metal part on drugs.
See that angled sketch? That sketch is located on the top plane.
All my planes have shifted to an angle corresponding to a sheet metal jog.
If I suppress all the jogs, then my planes return to their default positions.
This is obviously some sort of bug (using SolidWorks 2013).
I have tried deleting the jogs and replacing them one by one, but the planes still shift.
How can I create the jogs and keep my reference planes from shifting?