Guild Wars 2

I’ve been trying to finish season 2 chapter 8 for two days and I’ve been stuck. I’m at the part where you have to defend camp resolve and three pact members get trapped in vines. However, when I get to this point only two prisons show up so I can’t advance. How do I fix this?

I am on the same part of the story quest and having the same exact problem, no matter how many Mordrem I kill, NO THIRD trapped soldier/mordrem pod spawns. I can’t find anything about it on google, i’m guessing this is a new bug then? Am I doing something wrong? Help please.

I am in the same boat and the last hotfix did not fix this.