X_REPRO_NOT_REPRODUCED
Means
a written repro test did not fail the way the original did
Typical cause
the generated test ran and did not end in the captured code: a masked field, a row the code read by hand, or a different build changed the outcome
Fix
x repro --list --json # re-read the bundle (x repro ID --json), then set its listed masked fields and unread rows by hand in the written test