Thaumic JEI has a setting that causes it to regen the itemstack json every time; once we're sure the modlist is set, this should be flipped to false:
# If true the Aspect from ItemStack json will be created always on startup, if false if will be only be created if it doesn't exist
B:alwaysRecreateAspectFromItemStackFile=true
Thaumic JEI has a setting that causes it to regen the itemstack json every time; once we're sure the modlist is set, this should be flipped to false: