I ran into this bug too. You need to let Braham speak upon entering the cavern where the boss chak is and then also try to get him to engage in the fight. This meant pulling the boss closer to Braham and destroying my clones so Braham would actually take a swipe.
Annoying you can't just charge in there but I hope the above helps others!
The above worked for me. Thanks.
STILL bugged 15 Oct 21.
I sniped the Veteran Chak Blitzer from a distance and killed it before it moved, causing it to bug Baraham. So, as above, draw the Veteran Chak Blitzer to Braham and let him engage it.
BUG HALTING PROGRESS: Quest: "Roots of Terror"
in Bugs: Game, Forum, Website
Posted
The above worked for me. Thanks.
STILL bugged 15 Oct 21.
I sniped the Veteran Chak Blitzer from a distance and killed it before it moved, causing it to bug Baraham. So, as above, draw the Veteran Chak Blitzer to Braham and let him engage it.