Android-Android Syncing - Bad syncing status like Syncing(-13869%) & Syncing(9%)

I have 2 phones set up with the Syncthing app and some folders set up. All folders are one-way only (sender->receiver). At least one of those folders is on the SD card of the sender if this might matter.

Each device shows up on the other DEVICES list. This is where things are weird: On the sender: DEVICES shows receiver and is stuck at Syncing (9%) On the receiver: DEVICES shows sender and is stuck at Syncing (-13869%)

I have tried restarting Syncthing, restarting phones, etc. They always end up in this state.

What could be going on here and why would the app show such a crazy negative percentage?

Thank you