MASSIVE BUG WITH SHACO+TAHM!!!!

Was in a game recently, and was playing Shaco top. I'm pitted against a Tahm Kench. Everything is going smoothly as a low elo game should go. I get some good pokes and he gets some. When I hit 6, I walked into a bush and ulted, then had my clone walk out. Tahm fought with it, ant it got down to about 200 HP when he ate it. When Tahm spat my clone out, IT DID NOT DIE. It was stuck on 1 HP and would not be killed. Tahm autoed it several times, but it was invulnerable to ANY spell or attack. The only time it did die, was when the cast time expired. Can be replicated 100%. Did anyone else see this bug??? Sorry for no link as I don't record my games.

STEP 1. BE SHACO LVL 6

STEP 2. GET CLONE TO POINT WHERE TAHM W CAN KILL

STEP 3. TAHM EATS CLONE

STEP 4. TAHM SPITS CLONE

STEP 5. Enjoy your invincible clone!!!!