Temple of Mythal ritual - Companions *NOT* holding position

I've got to say, though only "three" of us have also had this problem, I've spoken with many players, and they have all had this issue. Not pleased.

My issue isn't to do with my other companions, but with Morrigan. I try to jump back to a safe middle area, and she's suddenly standing there, registering my jump as an attempt to ask about Mythal.