Kha'Zix bug when facing Soulbound units: ulting the soul (dead soulbound unit) and freezing in place

I just lost a game (6th) because my kept ulting onto when he's in soul form, instead of ulting onto , or any other enemy unit. He kept going onto the dead soulbound units and he kept freezing in place, doing nothing until he died.

I don't think this is intended to be like this. But, if Riot intended this to happen, then that's just stupid af.