Comment 48 for bug 804936

Simply updating and reordering text and topics on that page. I then saved the page manually, because I've set Zim to autosave every 10 minutes, following the instructions on this page, even though it didn't solve the problem.

I always have Syncthing running on the background, which is the tool I'm using for synchronization now, and it is set to check the files every five minutes. Perhaps the verification coincided with the moment I tried to save? When I use other synchronization programs (like Tresorit) the problem happens more frequently, because they tend to check the file as soon as it is changed. I'm certain having the notebook synchronized, encrypted or otherwise monitored is the culprit.

I don't think the problem is caused by anything in particular in the contents of that page, because I've seen it happen everywhere.