New? Bug Found!
Guess no one noticed this before.

Actually, I just didn't notice your thread.
Strange things can happen when you combine 2 separate ways of zoning. You can end up in the wrong spot if you use the Transport powers while at a Train/Ferry also, but it depends on the /loc of your destination, and where that /loc is on the map you are zoning to.
In your case, your mission door's /loc is outside of where your base is located, causing you to fall to the "bottom" of the map, which is -2000 ft.
Strange things can happen when you combine 2 separate ways of zoning. You can end up in the wrong spot if you use the Transport powers while at a Train/Ferry also, but it depends on the /loc of your destination, and where that /loc is on the map you are zoning to.
In your case, your mission door's /loc is outside of where your base is located, causing you to fall to the "bottom" of the map, which is -2000 ft.
A while back, this was a well-known way to get to Pocket D but OUTSIDE the structure.
Well, maybe not 'well-known'.... but it worked consistently until it was fixed.
Paragon City Search And Rescue
The Mentor Project
Not sure if anyone else has had this problem, but I was able to reproduce the problem.
I discovered this by accident -
I was doing hero tip missions. I was in PI and had one in Bricks. So I hit the SG Base TP power and part way through, I remembered that my Mission TP power was recharged so I clicked on it effectivly queing it.
The SG Base selection screen showed up and thew Mission TP power was starting it's activation.
I decided to go ahead and go to the base since it was already waiting so I selected the base and voila!
I appear outside the Base map in the null void area (foggy and a bottom that is way down there. After falling and taking close to 2000 damage, I am sitting no where in sight of the base and see no floor so casting the Ourobo portal didn't work.
Casting another tp (Mission TP/Pocket D/SG Base TP/etc) will work and so does typing /stuck. That of course takes you inside the base.
Like I said, I can duplicate this all day. I did put in a bug report and actually had a GM come inside and see what was going on (and got me back on the streets). Hope this helps the dev team and I wonder how many people have reported this already.