Thank you for the report.
That seems to be related to this issue:
The live sync of PouchDB doesn’t report network errors but just keeps retrying automatically.
As I discussed in the thread above, the app can be offline for various reasons and it’d be annoying to notify every network failure.
With that being said, I think the problem is that it can cause unexpected note conflicts.
Maybe it’d be better to display “Offline” in the sync status when detecting a network issue somehow like he suggested.