[GAMEPLAY] Illaoi Ultimate Stopped Attacking Enemy Champions On ARAM

I was playing Illaoi. For the first 3 or 4 times I used Illaoi's ultimate it worked normally. However, after I missed it the first time (landing it on no enemy champions) it quit working properly. After that, no matter how large of a group I used the ultimate on, no tentacles would attack enemy champions after they spawned.

Just to be clear, the tentacles continued to spawn when the ultimate was cast, but they did not deal their initial spawning damage.

I am not sure if this is a common bug, or if it was an isolated one.