I am playing with an XBox 360 Gamepad, but I see this with the mouse, too. When I enter a new area, simply moving the thumbstick aims the character, but doesn't move. If I use thrust or shoot or hit other buttons, I can start moving, and can keep moving as long as I don't stop. But, if I stop, I get stuck in the spinning, non-moving mode again. Sometimes, after playing for a bit, I can get the issue to "go away," but not reliably.
Is this a known bug?