Path animation is different when rendered

Hi, I have a rig with a bone using the follow path constraint. In the view port the animation looks exactly how I want it . In view port render mode it turns out perfect. But when I render frames the bone dips down on the z axis. Can someone take a look?

Its blender 2.80

https://1drv.ms/u/s!ArLCaWono5wggrEEfBaGt0FdvqCKOA?e=uQ4Stf