[GAMEPLAY] Tahm Kench unable to swallow Master Yi

While playing in blind pick I was playing as Master Yi and was queued with a tahm kench. The tahm kench was unable to eat me and he was able to eat all the other champions on our team. I was playing through the alpha client and he, the regular client, and i was using assassin master yi skin. We tried while i was moving and while I was standing still, and it never worked.