[GAMEPLAY] rammus' taunt spell is often bugged

With Rammus ,when our target enters into the bush and disappears before us and in the exact same time we activate our e skill on them, the taunt spell on the skill bar goes on cooldown while the effect does not apply on the enemy.

To recreate this bug: -follow the enemy to the bushes

• before they disappear (need a perfect timing) activate our taunt spell

• after we can see that the taunt didn't happen and it went on cooldown while we ping the skill in chat it says that its in "active" status. This bug can occur in every game against every enemy champion.