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  1. Minecraft: Java Edition
  2. MC-32575

The /summon (potion) effects for mobs: speed and slowness

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    • Icon: Bug Bug
    • Resolution: Works As Intended
    • None
    • Minecraft 13w38a, Minecraft 13w38b, Minecraft 13w38c, Minecraft 1.7.1, Minecraft 1.7.2, Minecraft 13w47e, Minecraft 13w48a, Minecraft 13w48b, Minecraft 1.7.4, Minecraft 14w02b, Minecraft 14w02c, Minecraft 14w04b, Minecraft 14w05b, Minecraft 14w06a, Minecraft 14w06b, Minecraft 14w07a, Minecraft 14w08a, Minecraft 1.7.9, Minecraft 14w17a, Minecraft 1.7.10, Minecraft 14w29b, Minecraft 14w30b, Minecraft 14w30c, Minecraft 14w31a, Minecraft 14w33c, Minecraft 14w34a, Minecraft 14w34b, Minecraft 14w34c, Minecraft 14w34d, Minecraft 1.8-pre1, Minecraft 1.8-pre2, Minecraft 1.8, Minecraft 1.8.1-pre4, Minecraft 1.8.1, Minecraft 1.8.5, Minecraft 1.8.7, Minecraft 1.8.8, Minecraft 15w33b, Minecraft 15w33c, Minecraft 15w38a, Minecraft 15w50a
    • Windows 7
    • Confirmed
    • Creative

      With the new command /summon, some (potion) effects that can be added to a mob, are not functional (as I believe).

      I was attempting to /summon mobs with potion effects on my multiplayer minecraft server. I was doing this with command blocks. All potion effects worked and were added successfully except speed and slowness.

      To recreate this:
      1. Put the command: 

      /summon Cow ~0 ~1 ~0 {ActiveEffects:[{Id:1,Amplifier:10,Duration:100000,Ambient:0,ShowParticles:1}]}

      in a command block.
      2. Activate the command block.

      I am unsure of whether this is intended or bug. Thank you!

            grum [Mojang] Grum (Erik Broes)
            adroboom Adrien D
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              Created:
              Updated:
              Resolved:
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