Service workers are a bit of a wild west: they can be killed at any time for any reason. This meant that a service worker (and with that a sync cycle) could be killed mid-sync, where files are already synced, but the _snapshot_ has not yet been persisted to the database. These changes persist the snapshot after ever single file sync operation (before: fully sync cycle), removing or at least lowering the chance of this happening. This can be a bit slower, but it's probably worth it.
Zef Hemel