Trying to track down this inconsistent behavior, and wonder if anyone else has been similarly stumped.
Absolutely, positively NOT a class visibilty setting: e.g., I duplicate a section VP which displays correctly and the copy DOES NOT display correctly. All within one file, no WGR or DLVP to external files. Some SVP OK, some not, restart, different pattern.
Only pattern I've noticed is (I think) symptom appears with larger files around 100MB or more. Perhaps file corruption...?