Found old-forum post today, which may be used as a proof of existence of this teleport even in 1.4
Tomec the Wise wrote:06 january 2005:
Hehe, you know there is an engineer in Booty Bay named Scooty or something... Title is even Chief Engineer, and he stands by some gizmo that looks like a transporter...
What's really funny is that at the other end of the teleporter is another goblin named "Spork".
The 'porters are used by the Horde to get from Booty Bay to the entrance of Gnomeregan without having to hoof it through Alliance territory.
proof
There is a detailed information of this bug on github, with ID's:
Devs\gms please fix it! Or at least let me know that you are aware of this issue\working on it\don't have time for it ... just i have a feeling that I'm talking to the void