Minecraft Forums

As of today, when I try to pillar up/jump stack, I'm moved sideways mid-jump such that I fall off the pillar I'm making. This happens every time and has not been fixed by restarting Minecraft or restarting my computer. I've seen this before and been able to fix it with a restart of my computer, but not this time. The only thing that's changed is that last nigth someone else in the house installed a new mouse and keyboard. Suggestions? Needless to say, playing is not an option currently!