Children respawned in the same frame their predecessors were despawned can keep the
default identity GlobalTransform indefinitely, rendering at the world origin instead of
under their parent. Observed in a real-world project, this is a self-contained reproduction.
With a handful of orphans per frame, the dead entities usually reach the bitset
after the live climbs already ran, so the bug needs an unlucky task-scheduling
inversion (in the source game: a few sightings per week during development)
Affects Bevy 0.19.1 with the multi_threaded feature and default