[Zubersoft]

I'd like to look into this further, but due to the fact that I don't see any issues with my own test libraries, it would be great if you can create a library backup file under Settings->Backup and Restore->Backup Library, upload that to the cloud (Dropbox/Google Drive/OneDrive) then share a link with mike@zubersoft.com. I will then restore your library on two devices, make a small change, sync them and see if I run into any of the issues you have listed. If you haven't done so, it might be a good idea to try restoring the library backup file from one device on the other, then trying to make a change and sync over WiFi to see if that helps at all.

Thanks,
Mike