I think that is an exceptionally rare occurrence. I poked through your IDs and one user was simultaneously identifying the unknowns at the same time you were. Perhaps there was just a hiccup when IDs were happening in real time. I’ve identified thousands of unknowns and have never had it happen. Here’s one of yours like you describe and you can see it kept your more specific ID https://www.inaturalist.org/observations/201454138