When making a particle system with keyed physics, it works in viewport but the particles do not show properly in the final render. They reappear from the world center when all the previous particles die. Also the particles of the keyed particle system are not affected by force fields.
See the link for screen recording and the sample file.
The problem shows in blender 2.80 and 2.81 but not in 2.79.
I think this might be a bug in blender 2.8 but I hope you can help me to solve it.