Cant exit a specific incursion map.

Reference number: 472.832.013
Location: Incursion (Burial Chambers)
So I'm getting really annoyed by this now, thought it'd be fixed long ago.

Basicly I can get in clear the whole thing and then I have to wait for the timer to run out, because somehow I cannot use the portal out.

If I hover my mouse over the portal, it highlights.
If I click on the portal, to try and get out, my character moves to the portal and executes no portal mechanism what so ever.
The 'error' occours every time this map layout comes at hand and only this map layout is causing the issue.

Screenshot