Illaoi ULT BUG - Spawned Tentacles disappear after 8 seconds

Here is the description for Illaoi's Leap of Faith

"Illaoi smashes her idol into the ground, dealing 150/250/350 (+50% bonus Attack Damage) physical damage to nearby enemies. A Tentacle spawns for each enemy champion hit and,** for the next 8 seconds**, Tentacles swing 50% faster, are untargetable, and Harsh Lesson has a 2 second cooldown."

When it says ** for the next 8 seconds** it is referring to the BUFF that will last 8 seconds... not the tentacles.

There is a comma and then it says " for the next 8 seconds , Tentacles swing 50% faster, are untargetable, and Harsh Lesson has a 2 second cooldown." The way it is written it is only referring to the faster attack, untargetable tentacles and 2 seconds Harsh Lesson that will last 8 seconds.

Sorry if it is a little confusing but correct me if im wrong. The tentacles should stay alive even after the 8 seconds.

Thanks.