FX Engine going out of sync

Hi Everyone
Just wondering if anyone else is having an issue with the fx engine. I have quite a complex showfile with a lot of pixeled fixtures which leads to some quite complex effects. Think blocking “240/60/8” sort of thing.

I’m finding that when I am editing a cuelist and start going back and forwards the fx starts going wrong. Like the blocking isn’t correct etc. This particularly happens if the fx is going over multiple cues

Releasing the cuelist and then playing the cues fixes this but I’m worried it’ll happen in a show someday. Any pointers?

(Jack has seen a showfile with it doing this, however its happening again and I’m about to send you a new showfile Jack)