Body movers are no longer being supported – they were made for the old spring physics solver, and the new PGS constraints generally work a lot better. Can you try implementing the bullets using VectorForce or AlignPosition?
Implementing this with PGS constraints will be more difficult because there’s no PGS equivalent to BodyVelocity, but this will either 1) demonstrate that this is still an issue with PGS or 2) yield you a solution in the end anyway. In the case of the latter, you can make a feature request for more intuitive PGS constraints.