Update cleared `_updatedOrbits` and only then waited on the previous tick's
asteroid-belt tasks, which read the cache through GetOrbitPosition. A task
still running could see the set mid-clear ("concurrent update ... corrupted its
state") or recompute an orbit into last tick's position. The wait now comes
first.
Test (Soul's orbit counter, committed): 3000 back-to-back 0.02 s ticks of a
quiet arena, and no orbit stands still against its parent. Clearing first gave
500+ stalls or the corruption exception. Measured against the parent because a
moon can genuinely pause in zone space: one such reading (tick 1321, a moon
whose motion cancels its planet's) is real motion, not the race.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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