Same here, she won't even react to me. When I mouseover her, its not even possible to interact with her. Please notice this is when she is standing on Halls of Secrets. The Halls of Heroes version of her (where she is sittin in a big table with lots of food) I was able to speak with her just fine.
Please help, we just finished saving homesteed and Zixzax is back to his old "ARENT U GOING TO LEAP THROUGH??" position..
Same for me. My friend and I have over 60 hours in our game and we didn't really notice zixzax was bugged until it was way too late. Didn't get anything opened past the hall of secrets.
We were able to complete the game by cheesing the entrance door to the source temple by throwing our pyramids over the wall, but I feel like we've missed out on some of the content.
I'm trying to remember but I think the cause may be what a gentleman said above, I don't think we ever went back to the end of time in cyseal, except for the mandatory one visit.