**Short description of error**
"Follow curve" option in follow path constraint makes constrained object flip around if first (or second) vertex of curve is manipulated
**Exact steps for others to reproduce the error**
Move around any of the two bones I point at in the blend, it makes the constrained bone flip around. As I pointed out in the blend also, checking "follow curve" makes the constrained object point in another direction (which doesn't seem to make sense, as it seemed correct *before*) - so a readjust of the "up" and "forward" axes is needed afterward.