It seems like something major has changed about dodge behavior since the last patch. I have constant problems with my character dodging in the wrong direction. I'm using Mouse and Keyboard, so there's no ambiguity about what key I'm hitting. It is very common for me to double tap D for a right dodge, and instead my character does a full escape roll backwards. The behavior isn't so common that I can tell why it is happening or recreate it in training, but it is common enough to get me killed several times per dominion match.
It isn't related to there being a wall to my right or no space to dodge. In fact, it often seems to happen when my right is clear but left is blocked. I have not noticed it happening when dodging left, but I can't say for sure that it isn't. EDIT: It happens when dodging left too.
What could be causing this? I've only been playing a couple of weeks, but I had 0 cases of this before the patch.