You can escape above the skybox with Apollo if you go to this spot i also previously reported but still hasnt been fixed yet. Graves is also able to place her Tombstone there.
Ok i just tried it myself and that spot is a real death sentence. The Game doesnt consider this space Out of Bounds so it just lets you stay there. Either the Devs fix the spot that it does TP you back or remove the floor there.
As Wraith you were able to get out there tho. There is a Pot that...
Just tested if you can get yourself "stuck" within the Doorman Ult as Wraith and you can. This would allow someone to survive an Encounter, if the Enemy Team decides to focus you. You then can also just use "unstick" to get back into the game.
I can see this being abused to survive the Doorman...
I checked today if the OoB Spots i posted a while ago got fixed and to my surprise, they did. But then i instantly found another one that is also a bit more easier than the other ones.