I think It’s a bug and I staff has to decide if they want to put effort in it to fix it before iNaturalist Next…
I could reproduce it with an observation of my own, probably in the cache of the Androidapp. If I want to retry it with observations, not of my own, it is not possible. Then I have to up or downvote an annotation in the Android app.
https://www.inaturalist.org/observations/240300629
https://www.inaturalist.org/observations/240300496
See also the casue you have to update the app:
https://forum.inaturalist.org/t/android-app-overwrites-location-and-date-that-i-updated-on-website/55974/3