Malphite "R" bug

There is a bug whit ult , some times is just a dash and nothing else. I was playing AP (I had a lot of fun) and I wanted to engage in a team fight (whit my ult like any ) when suddenly I just dashed and died because my ult did nothing but making me look like a idiot . Happened only one time so I am not mad but is a bug that should be fixed. What really happened : ult just a dash no knock up no damage It happened in a normal game but if it happens in a ranked probably would ruin the chance to win that game. Because we all know how powerful Malph's ult is and how can it change a lose in to a win, I'd like to report this bug and hope it will be fixed.