[GAMEPLAY]Vi Ulting Olaf. Olaf in air longer than intended

My last game (Date: 10/21/2016 Vi Top with flash, Ignite. Score:5/1/1) I was versing a Olaf. The game was fine until level 6 rolled around. I would Ult (Assault and Battery) the Olaf, Mid air, would use hit Ult (Ragnarok) and than Olaf would be suspended in the air longer than Vi's ult. I would be on the ground hitting Olaf as he was still in the air.

How to create bug (After messaging the Olaf a few times on how his point of view for the interaction was) : -Vi Assault and battery Olaf -Olaf ,mid air in vi's assault and battery, use Ragnarok

The bug happened 4 times over that game versing the Olaf. Every time the bug happened it was with the the above conditions (or so it seems)

this link is another forum (WITH A VIDEO) from long ago with the same problem: http://boards.na.leagueoflegends.com/en/c/bug-report/c3cVTKBL-league-of-legends-bug-vi-ult-on-olaf-possibly-other-knock-ups