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Keeper Engineering Upgrade bug

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Level 10
May 31, 2019
I don't know if this is really the place for this, but I felt it was interesting.

I was playing around with making an Engineering Upgrade ability for the Keeper of the Grove.

When adding the default, unmodified Engineering Upgrade to him via a trigger...

  • Melee Initialization
    • Events
      • Map initialization
    • Conditions
    • Actions
      • Unit - Add Engineering Upgrade to Keeper of the Grove 0000 <gen>
He gets these freaky spikes all over him!

keeper eng spikes.png

But what makes this even more interesting?

Just change his model, and the spikes go away!

kobold keeper engineer.png

Now, how about changing a different hero's model to the Keeper, and adding the Engineering Upgrade ability?

keeper paladin spikes.png

Spikes again!

Now, Engineering Upgrade is notoriously buggy, but this surprised me. How does the combination of this ability and something specific to the Keeper's model cause some weird spike attachment? Never seen war3 do this before lol.

I am on 1.28, so I dunno if this bug appears in other versions of war3.

Not really a big problem, but I found it very curious, so I thought I'd share it.


Warcraft Moderator
Level 58
Aug 10, 2018
Engineering Upgrade has these spikes in the buff art if memory serves me right. I imagine if a unit's model is missing these spikes it would be attributed to the fact that the model is missing the attachment point being used by the art.
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