Just a minor bug I found when I was building in my server. If you're moving a brick, crouch, and then turn off the numlock key, the glitch continues to move in the direction it was moving, you can't move the brick any other direction, and you can only plant it. To fix this however, just activate supershift. It will cancel the movement of the brick and the glitch itself.
I wasn't sure where to post this, figured I'd post it here just in case anybody else experienced it.