On Shatterbone, both about 2-3 weeks ago and today, the Droughtlands epic invasion "Saving Lantern Hook" began. The first phase has us defeating the flamelords, which goes over fine, but the second phase requires us to kill fire rifts that do not spawn.

Of the few rifts that are there during the invasion, even fewer give credit towards the invasion. Interestingly, fire rifts that spawn randomly sometimes can give credit.

I am uncertain if other servers have experienced the same issue and just hoped to bring it to everyones attention.