Rules stop working after Drupal updates (8.9.9 to 8.9.10). Issue has also occurred on earlier minor upgrades.
Rule used was very simple - on adding or changing of any node where condition "is published" system fails to trigger action (send email)
Temporary workaround is to delete the condition *is published", save, then re-add the condition again.
Closed: cannot reproduce
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It's likely this issue predates Contrib.social: some issue and comment data are missing.