Syndicate - no boss spawned, no portal to go back - player stuck

I entered a Syndicate Hideout from inside a Strand Map.
BUT, I clicked the syndicate button on the Investigation Page WHILE I was choosing to imprison/release one of the betrayal NPC's.
This interaction might have something to do with it.

I cleared the path to the syndicate portal entrance just fine and when I entered the boss room no boss is present.

The portal to go back to the previous syndicate map (before the boss) is also not available.
The door to go get the rewards is also locked since I have not killed the boss.
It kinda feels like the game did not properly register that I have entered the boss room.

As it stands I cant leave nor go forward and I am forced to use a portal scroll to go back to Strand Map.

Going back to Strand Map and entering the Syndicate Map again does not change anything, it just places me back on the empty boss room.

Bug Report ID: #2,218,253,110