I am rendering a fluid animation with the Flip-fluids add-on. Rendering each frame as 'png.' with RPR using GPU. Some frames are rendered as expected, while others only render the HDR background without any clear cause. I am using "Radeon Pro 555X" on MacBook Pro. Blender version 2.82a.
Three attached files. First renders correct. Second is HDR background. The third is just weird.