Fixed in https://github.com/badbundle/vault-app/pull/624 (merged as 40744d42).
- Backup format:
VaultBackupItemnow carries two optional fields,showInQuickTypeandpreviewMode(stored asTITLE_AND_FIRST_LINE,TITLE_ONLYorHIDDEN). The encoder writes them for PDF export, device transfer and auto-backup. - Restoring: the decoder restores both fields. For backups made before this change, it falls back to the old defaults (QuickType on, title and first line).
- Compatibility: no format version bump was needed. Older app versions ignore the new keys.
- Tests: a JSON snapshot pins the wire format, and there are encoder and decoder tests. A full PDF round trip, for both merge and override imports, checks that an opted-out code stays out of QuickType and that note preview modes survive (MANIFESTO C7).