I tested using Syncthing to facilitate collaboration in my team project. In a (much) earlier version, we had a crash, and some of our files are now locked for editing, even though syncthing is offline, etc. (They are still locked now, months later.)
Why did this happen, can it continue to happen, and can we fix it without messing up our sync history?
Syncthing doesn’t use file locking. When syncthing is going to update a file, it makes a copy and changes the copy, then renames the copy over the original.