Yasuo "Last breath -> Steel Tempest" bug

So I was playing today some games as a Yasuo. And found a pretty annoying bug that occurs after using his Ult. The bug works this way: It is 15th minute of the match and the enemy mid laner engaged with enemy jungler and the side. Tried to stack up my Q and after that I knocked up both enemies. Although both enemies were lined up perfectly after dealing damage to them with my ult I IMMEDIATELY used my Q. thrusting attack went through both targets yet none of them got hit (none of them took any damage from that Q). To reconstruct this situation you just have to simply use Yasuo's ult on someone and mash your Q, or time it well, so that the enemy would be hit in the same moment he takes damage from Ult.