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Issue description:

Ender dragon Dupes going through teleporter

Steps to reproduce:

1. Setup a teleporter linked from the end main island to somewhere else
2. lure the dragon to fly into the portal
3. dragon destroys the frame but dupes. one dragon goes to the teleporter destination and the other remains in the end

Version (make sure you are on the latest version before reporting):

Forge:
Mekanism:
Other relevant version:

I don't have a version number as it was reported in a different discord I'm going to assume it's the latest version.