so i have like 4 device(3 desktop and 1 smartphone). all of them is installed a syncthing and its running. so when I went and edited a file on one computer running windows using obsidian it created like 3 conflict file.
the other device doesnt have any user on it actively editing nor do they have obsidian running
desktop: obsidian 0.15.9
all 4 device use syncthing 1.20.3
I had a similar problem using Folder Sync app on the android, have moved to DropSync and the problem seems to have gone away. I suggest you could try it - in the free mode it allows a single folder pair sync.
I do realise that my answer may not be what you are looking for, considering that DropSync syncs back via Dropbox, but the essence of my suggestion is to try a different sync app, if that makes sense.
I’ve had this problem on other files being sync’ed. Quite often the issue is the file name . You might have changed the name and had upper / lower character conflicts or characters that aren’t supported.
While editing, a popup in Obsidian saying that it is merging changes
Conflict versions of notes being created
I have the “Update time on edit” plugin installed, and I think that is at least partially responsible. I haven’t looked at the implementation of the plugin, but it could be that it detects synchronization as an edit, updates the metadata, causing another sync.