Delve - empty room, event won't trigger

So I went to a point that 'contains strongboxes'.
The room was completely empty- not even 1 strongbox, and no event triggered either.
The tractor waits there till the event will end - event that will never start...

So I end up with no checkpoint, no option to interact with the tractor (as it still waits for the event to finish), and no reward...........

some pictures to show the bug:





EDIT: since the event didn't trigger, and you can't open portals in the delve - the only way out was either disconnect, or die.

The same thing just happend to me.
The Crawler stopped by the destination i chose but the event didn't start.
I could not interact with the treasure. There were no other things to interact with like a grave or a pile of bones. And i could not interact with the Crawler too.