The custompotion command first parameter has been changed to a list with only potion, splash_potion, and lingering_potion instead of a number from 1-3 representing each item respectively. Additionally, hideParticles will now properly hide particles (It was changing the ambient field the entire time)
Both custompotion and forceeffect have a slightly improved result message + a failure message if the string effect list is invalid.
11.1.11: Added an extra failure message for custompotion if anyone attempts to put in a non-potion id like a moron to prevent misuse.