Fiora ulti does only 1 hit

Probably a bug having to do with Wukong's clone disapearing during one of your ulti strikes. I know if Fiora loses vision of all targets the ult will end.

Yeah, that's no bug. You ulted Wukong and Wukong's clone. Your ult went to the real Wukong first, then to the clone, but the real Wukong walked away. The real Wukong was far away enough from the clone so that you couldn't reach him, and the clone disappeared right as you ulted on top of him. Thus, you only hit twice and not the full 5 times.

Source: I main Fiora.

The range on Fiora's ultimate is 400. If no other champion is within that range then she will not jump.

Fiora's ultimate will prioritize jumping to non-hit targets before hitting the same target (provided targets are within range).

So here's what happened. When you hit Wukong with your ultimate his clone was still activated and within 400 range. But when you jumped to hit the clone Wukong himself ran away far enough to be outside the 400 ranged distance. And since the clone deactivated your ultimate stopped as it had no more targets to hit.