You know how mobs get trapped in trapdoors, meaning they can't jump over? it also applies to the warden , which is extremely op. I don't know if it's a bug or its on purpose but yeah.

Thank you for your report!
We're tracking this issue in MC-50556, so this ticket is being resolved and linked as a duplicate.

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If it was fixed I think everybody would be at my throat but idc 🙂

Thank you for resolving but i'd like to add on by stating that it's that same for rails