[GAMEPLAY] Azir's passive turret and Teemo's mushroom tanking infinitly

Last day when I was playing with my friend who was playing Azir against a Teemo we saw several times that when Teemo's mushrooms get the turret focus they don't take any damage. The problem with this bug is not that Teemo can dive Azir free but the enemy's minions can destroy Azir's turret in like 2 seconds and is passive become useless.

1- Take Teemo and Azir in the same game 2- Use Azir's passive on a turret 3- Place Teemo's mushroom under the tower 4- Wait and look at the mushroom

It happened like 4 times in a 50 minutes games but it's pretty annoying

I don't have a video of this bug cause my PC can't record sorry about that :/