I tried it in PTR; this is how I discovered the animation bug. While the GoD 4-piece bonus does indeed fire Evasive Fire while strafing, the animation is missing and you only see the on-hit sparks. Furthermore, the backflip is disabled from the relevant runes (for obvious reasons).
Edit: both of these bugs (Grenade aim bug and Evasive Fire animation bug) were reported very early in the PTR but no bugs were fixed. See my massive PTR feedback thread for details: Season 21 PTR - Organized DH Feedback Thread! 🏹