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?
Are you using the new Lightroom; the version that's the same (mostly) on desktop and mobile? Then you may have noticed that a few features are NOT actually on both platforms. The ones that get me the most are Copy Photos (ie duplicate photos) and Batch Paste. I've found a way around it… in a round about sort of way. Check it out!