Black particles that can be seen through walls

When playing, particles randomly flash black and are visible through block while flashing.(may only happen when there is a lot of particles loaded, needs further testing)

What I expected to happen was...:{*}{*}

particles not flashing, not beeing visible through walls

What actually happened was...:
particles flash black and are visible through walls when they do so

Steps to Reproduce:
1. set up command block(or bunch of dispensers with spawn eggs for mobs that take fall damage) to spawn a lot of mobs in the sky,
2. surround the block that they die from fall damage with other blocks on one side
3. step close to the place where they die

i will provide screenshot of the settup requied to replicate below