Ridding through a creative gate (portal plugin - http://dev.bukkit.org/bukkit-plugins/creativegates/) seems to make a double of my pet. Though walking through a portal normally does not.

Everywhere I go, they both follow. After I logout, one will leave, but one will stay. After the logout, only one will follow me. The other just stands in place.

I am really enjoying being able to take my pet everywhere now though, and as are my players! Thanks for this great update. Just thought I would let someone know about this duplication issue. Which is not too much of an issue.

Thanks again!
-Moose

Try teleporting with your Pet. Does this reproduce the same result?

Teleporting while on my pet does nothing, I go nowhere, and still have a single pet.
After walking through a portal I only get my original pet back.
After riding my pet through a portal in one world, leading to a portal in another, the result is.. two pets.

Does this happen in both 2.0.6 and 2.0.7?

I believe that this has been fixed. Reopen the issue if it's still occurring 😉