2 lux ultimate bugs

1.When you channeling your ultimate and someone knockback ,knockup you etc... your ultimate does 0 dmg. 2.If someone become invisible right before your ulti hits them (akali shroud ,kha ultimate...) they took no dmg.I know that she does no dmg if she"s blinded (Like graves smoke ,quinn blind etc) but it doesn"t say anything about stealth.