I’ve seen similar, and if I may, I think it possibly happens because of what I’m talking about here: Cannot Stop Synchronisation - #12 by _Ben
Essentially the Android share launches Joplin which then tries to share and sync at the same time and can start flicking around between different notes and I’ve seen similar overwrite errors occur, though not exactly this. Maybe this is what they call a race condition.
I’ve since disabled the resume note plugin as perhaps this was making things worse though I don’t know if it’s the root of the problem.
For me the core issue is that auto sync can’t be disabled and Joplin is taking on more than it can handle all at once. One can even see this by simply cold opening Joplin Android and immediately trying to get things done - you end up dealing in a very laggy app until the initial auto sync is done.
Obviously there are some fundamental issues here but allowing us to turn off auto sync would provide huge mitigation until all these performance issues can be solved, and just generally it would provide useful functionality for those of us who think for a “local first” app it should be our choice when to sync.