I noticed this in earlier released versions but no one mentioned it so I figured it was intended but now it's just getting annoying.

When I tame a wolf it will see a skeleton and chase it so far away that it will not return unless you go and find it. They don't seem to teleport anymore either.

spawn and tame a wolf, then allow the wolf to attack the skeleton. if it gets far away enough the wolf will just stand and no matter how far you are away it will not teleport back to you or return by your side.

Perhaps a solution would be make a gui to stop the wolf from attacking any mob. Or an item perhaps.