I've had this problem ever since Remix FX was introduced as I always use automation on this plugin
The automation works fine and is recorded, but after a few plays it just stops working
The automation is visible, and even if you open the plugin you can see the movement being activated but it doesn't actually do anything,
This only happens with this plugin,
Latest Logic version, but still on Monterey 12.01
As I said this has always been the case with this plugin, over a year or so