Playback rebuilt the bundle layout from the absolute paths recorded in
the row. Those agree with reality until the application directory moves,
and iOS moves it: an app's data container is reassigned on reinstall, and
can change on restore or migration. Every stored path then names a
directory that no longer exists while the bundle sits untouched under the
new one, so every download reports "Downloaded copy could not be opened"
with the bytes still on disk.
Deriving is safe because the index lives inside the root
(<root>/index.db), so a row can only ever describe a bundle beneath that
same root, and persist_bundle writes nowhere else. Removal and eviction
already resolve this way; this brings playback in line with them.
Afonso Jorge Ramos
3238244de5