Hi, thanks for the reply.
This is not happening in my daily notes, as far as I can tell, so I’m not sure if Calendar is the likely cause. However, I agree that it’s a common thread, so let’s not rule it out. Not sure what you mean by Periodic Notes?
By redownload and install, do you mean the entire Obsidian application?
I recently started using the Git plugin to back up to a Git repo, because I have heard horror stories about Obsidian Sync occasionally corrupting files etc., however I am not ‘syncing’ in the traditional sense, in that information is flowing entirely one-way to the repo, and never in the other direction (I hope).
Hopefully this helps!