For example in this question, it was said that empty tags are deleted after 24 hours. This seems to not be the case for tags which have a synonym or an info. Examples:

  • 8
    The calculation tag had a synonym on it which prevented it from being destroyed properly. I've removed it.
    – animuson StaffMod
    Commented Jul 29, 2013 at 18:47
  • This seems to be a post describing in detail the issue mentioned by @animuson: Auto-delete orphaned tag synonyms.
    – Martin
    Commented Nov 27, 2023 at 13:31


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