Linux, Ubuntu-Mate 14.04, nVidia GT620
Broken: 2.77 (from page)
Short description of error
There's a bone with Action Constraint that its influence is driven by another bone. In normal play (Alt-A), the constraint is well driven (it goes to 0). But when entering in game engine, it doesn't do the same, the Influence is still at 1.
Exact steps for others to reproduce the error
Open the file, play the animation with Alt-A
Enter in BGE, the animation plays automatically.
Compare the movement of the bone "B" in both situations.
Here I use Action constraint, but I think that this happens also in other constraints.