Bug in "Audition with the King" Maze phase – Portal Unreachable

During the boss fight in the "Audition with the King" (I used around 20-30 high-tier waystones and many tablets to finally find a fragment) maze phase the portal back to the boss was unreachable. The wisps that are supposed to guide the way were leading to a dead end, creating an impasse. I was standing almost right next to the portal with no visible entry path. I didn’t experience any issues finding the way in my previous two attempts (yesterday), where the wisps worked correctly. Has anyone else encountered this bug? Could it be related to a recent patch or fix?