Having installed 3.5 my photos appear to have lost the adjustment logo in the bottom right corner. The photos are the correct ones but I can only tell which photos have been adjusted by trying to remember what they looked like before. Does the library update lose the adjustment info?
Just out of curiosity, did you double-check your metadata display settings? It could be that that changed, causing the adjustment badge to disappear. I think it’s under View->Metadata Display
#nofilter before anyone knew what it meant.