I'm pretty sure this is just the nature of having PDM Enterprise installed, which adds a Windows Explorer extension. ie If you just browse into a PDM folder in Windows Explorer, I believe it will display differently... Or go to File Open dialog from some other MS applications (notepad or paint?)...
I think you can disable the PDM Enterprise explorer extension, but then I'm not sure how off the top of my head and this might also impact some desired behaviors you use in SolidWorks...
might be, but why is it only happening in 'open' menu in Visualize, SW if i open and browse into pdm it shows with no problem, and switches to all different display types (large tiles, detail, list, etc).
In Visualize it doesn't change display of folders no matter which one i choose - that's why i'm thinking it might be a bug.