Check your raid!
I had done raid tier 3 soon after it was open.
But just now after I was freed from the portal bug I wanted to check my current place in the raid ranking.
And I saw that my raid score from doing raid 3 was still there…
the raid tier 3 that I had cleared and should have been colored green was colored blue again.
It means that the clearance of raid tier 3 was negated.
So everyone who was stuck in the portal should check their raid to see if tier 3 is marked as cleared.
Just doing the raid once again is enough as your score remains.