It seems my claim earlier was false, I think it is my world that is doing bugged out, it is on the latest DND5e system version too, no errors on consoles. I tested a new world to see if the bug would persist, and it didn’t. Copied my world to my local hosting and another hosting provider to see if issue would persist, it did. So it’s likely something in my world, It’s likely another module but not forge.
I’ll close the issue, as I believe I have wrongly reported. Sorry!