System Information
Operating system: Windows-10-10.0.17763 64 Bits
Graphics card: Quadro P1000/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 431.40

Blender Version
Broken: version: 2.80 (sub 75), branch: master, commit date: 2019-07-29 14:47, hash: rBf6cb5f54494e
Worked: (optional)

Short description of error

• the viewport shows different and renders it out a different way.
• Actually, as the particle wants to come form the cube and form a sphere by each part.
• it works correctly by after some time this had changed and start to work wrongly.

Exact steps for others to reproduce the error
add a cube and a sphere. give subsurf modifier to cube to match the number of faces in the sphere.

Particle Emission

cube:

sphere:

Explore Modifier

• apply to explore modifier to cube and sphere after the particle system

cube explore modifier:
select the cut edge, unborn, alive
sphere explore modifier:
select the cut edge, Alive, death

Particle Physics

cube physics: newton
sphere physics:

I didn't use cache for this animation

give emission material to both

this is the screenshot of the 81th frame in render view

this is the render of the 81st frame