My workflow was to select the analysis tab -> draft check. Then pick the part in the top node of the model tree (in part mode), then select the 'direction' field in the draft check tool and then pick a p[lane in the tree. All my surfaces are on a layer and the layer was off, no surfaces displayed. The draft check resulted in all surfaces made visible and the draft check applied to all, pretty useless when you have copied geometry from the skeleton and a number of other construction surfaces.
After the draft check, the surfaces remained visible, yet the surface layer was still off. No amount of regeneration or repainting would make them go away. I had to turn the layer on and then back off.
I tried selecting a single surface, then RMB to select 'solid geometry', but that wasn't possible in the draft tool. My client, who was coming in to resolve some challenging draft issues, showed me that you need to set the smart filter (in the lower right) to 'solid geometry' and then select on the part and you'd get all the solid surfaces only. Then the draft check worked as desired.
One user suggested that this change was made in WF4 'per a major customer request'. They indicated that there was a hidden config option (exclude_hidden_quilts_analysis yes) that resolved it in WF4. I had not had the issue in WF4 (or WF5, I believe). I tried the config option in Creo 2 and it made no difference.
So, the work around is to set the smart filter on solid geometry and draft check to that.
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