Ever since the Camera controls were ported into Lua, the FreeCamera has become affected by objects. Moving backwards into a part causes the camera to stop moving, and moving forwards through (or even looking at) a part causes the camera to gain a very large burst of speed. Expected behavior is for the FreeCam to have no collisions with any geometry.
This issue happens every time. It can be reproduced in an empty place by pressing LShift-P and then either backing the camera into the baseplate or looking down at the baseplate, which will produce the effects detailed above.
This bug happens in all places that take advantage of the provided free camera. I can confirm that it happens in live builds.