This happened quite a few times for me too in app exactly as described above - not taking suggestion and crashing back to list - for some observations. I am not using app now but validating my experience that this bug exists and not sure what triggers, sometimes they are observations I myself IDed or others IDed previously from app too
Can you please be a bit more specific? “Crash” usually means the app stops working or quits. And what “list” are you referring to - the list of suggested taxa? If so, that’s a known but that I’ve made a report for.