for me a couple of things are glitching - keyboard and one or two apps
my fingerprint reader is the same horribly unreliable - i can't say that has improved nor gotten worse
Having just got my first phone with a fingerprint reader, being an S10+, I have been very disappointed with the reliability of the scanner. Initially I put it down to the fact that I work in a workshop and my fingers are either constantly grubby, or that I keep "changing" them slightly with nicks or scratches. Hearing that others have issues with the same reader makes me think twice about that.
Although, best success I generally have is with either of my pinkies - they tend to get "edited" the least!
Yeah, don't judge fingerprint scanners by the quality of the one on these phones.
I had a OnePlus 6 prior to this, and the reader was fantastic - very fast and a success rate close to 100% with scanning. The one on my S10+ is a dog by comparison. I still also miss its placement on the back. Not everything is an improvement...