This was something I noticed when I used the android app on a summit. I was in an area with spotty coverage, so my phone was jumping between LTE and no service.
When I would finish logging a contact, the pop up on the top right would throw an error for being unable to find a “Null” callsign. (Which obviously it can’t, i haven’t entered the callsign yet!)
Also, I found it annoying when it would throw 4 popups while entering information since it would end up preventing me from reading the callsign. I need to be able to see that when I am operating!
Don’t know if this is helpful, but I am using a Google Pixel 5a with the latest version from the google play store.