Thanos bugged?

Thespus

Something funky happened with the first thanos in uncollected today. He was at 31 percent and I used hulk. Immediately after the stone animation I swiped back and hit thanos to simultaneously remove inverted controls and activate the last stone. When that last stone activated thanos just stood there the rest of the fight and let hulk smash him. I think I found a glitch. Haha