Lephantis, Ancient Corpus Head Bugged?

[(XBOX)Maggy187]

The ancient corpus head of Lephantis has stopped exposing his weak spot during the first half of the encounter.

 

The result is no spawn pods on grid, both the Grineer and Infested heads are dead, and the corpus head will just pop up and then retreat.  Out of ten times thaat he comes up, he may expose his weak spot once; sometimes less.

 

The only work around that I have found so far is tenticle swarm, assuming that there is enough power left to finish him off and continue on to the second encounter.

 

Once you are able to move on to the second half, everything functions as it should.  I started taking note of this happening after the update that was released late last week.