[Gameplay] Xayah's passive can't destroy Illaoi's Tentacles

Once Xayah's Q activates the passive it's impossible to clear Illaoi's tentacles. Feathers go through them without dealing damage.

The gif shows that after the passive wears off the tentacle goes down. For recreating have an Illaoi around or even far away as it applies for the shrinked tentacles as well. Activate Xayah's Q and try to attack the Tentacle.