ParticleEmitter Desync Bug

Reproduction Steps
Repo: OffscreenCFrameParticlesBug.rbxl (32.9 KB)

Assembly CFramed Root, Grounded,
Assembly Physics Root, Connected,
BasePart Physics free moving,
all of which are affected.

Expected Behavior
ParticleEmitter should respect location of intended emission offscreen:

(Here, desired equivalent, having kept emitters in viewport entire time)

Actual Behavior
Particle does not respect transform offscreen:

(After looking away for three seconds)

(After looking away for three seconds)

(Live use: omnipresent (or at least should be) defining smoke plume on a ship gets ugly cut out)

This occurs for CFramed Root, Grounded.
This occurs for Physics Root, Connected.
This occurs for Physics free moving.

Issue Area: Engine
Issue Type: Display
Impact: High
Frequency: Constantly
Date Last Experienced: 2021-08-07 23:08:00 (-04:00)


There’s a lot of issues with particle emitters. I have over 4 bugs to report, but no where to place them.

Lifetime seems to increase the starting Rotation with the more RotSpeed the particle has, this is a huge issue.

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If you have bugs to report, you can follow the guidelines on how to make a bug report and send your reports to the Bug Support group.

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