This is only my second Revit project, so this may be a no brainer for most of you...but I am working on a structure, 5 concrete floor levels, all new construction.
What's troubling me is that the floors are showing the walls below (on the next lower level only) as halftone and selectable through the floor. I didn't have this issue in my first project. There are no graphic overrides in effect and the catagoy graphic settings are per the default template (no changes made by me). I have AutoCaf files linked in for each of the five floors, otherwise it's a pretty standard project.