I just got the same error, when clicking “Override Changes” does nothing. Here’s how I did:
1- Set up a folder in PC1 as master. This folder contains 10 rar files, each one is about 500MB in size.
2- Begin synching this folder with PC2 (not a master).
3- Wait until it transferred about 1GB of data, and then shutdown Syncthing on PC2.
4- Since I wanted to add other files inside the folder in master, I dropped a .stignore on it. file It’s contents can be seen in this question (see edit).
5- Clicked Rescan on PC1, and start Syncthing again on PC2.
I did try restarting ST on both computers a couple times, and hit the Rescan button, but nothing seems to fix the “Out of Sync” status.
@calmh, please let me know if there’s anything else I can do to help have this sorted out. And also, thank you for your excellent work on this software.