Particles only render while the center is on-screen

Partner Rank: 3

Verification builds: 1.12.0.11, 1.11, 1.8
Regression builds: Broken since 1.8, the first version that added custom particles

Summary: A particle is only rendered as long as its center is on-screen. This means an entire half of the particle can simply disappear from existence as the camera moves, and reappear all at once. Does not seem to affect vanilla particles.

Impact: Can't use "holographic" particles effectively, looks flickery/distracting

Repro Steps:

1. Download and open the attached world.
2. Press the button on the command block and look up.
3. Move your camera around. As long as the black dot is visible, the rest is as well. When the block dot is off-screen, the entire circle disappears.

Expected Results: Particle is visible as long as any part of its bounds are on-screen.

Observed Results: Particle derenders too early, disappearing when a single point in its center is off-screen.

Screenshots/Videos attached: Yes