Two things in this one that you will notice immediately.
The rotation preview in the editor was lying. Build a Priority loop with a Repeat count and the preview showed the wrong icon and the wrong first spell. It was reading old stored steps instead of compiling the live action tree. It now runs the same compile the engine does, so what you see in the preview is what fires.
The CVar notice spam is off by default. EMS was printing every changed CVar to chat every few minutes. That is gone unless you want it back. Settings toggle to re-enable it, or run /gems cvar notice on. The What Changed button still surfaces it on demand.
Two additions worth knowing: there is now a [nochanneling] tag in the spell picker sitting next to [channeling], useful for steps that should sit out an active channel. And native exports now carry the EMS version they were built with.
Grab the update on CurseForge, Wago, or WoWInterface.