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Duplicate

Duplicate in 6000.5.X

Votes

0

Found in

6000.0.66f1

6000.3.8f1

6000.4.0b7

6000.5.0a6

Issue ID

UUM-134020

Regression

No

Child particle spawns offset toward camera when Collide with Depth Buffer uses Lifetime Loss = 1

Visual Effects

-

Reproduction steps:
1. Open the attached “IN-132529” project
2. Open the “Scenes/CollisionBugScene” Scene
3. Move around the “Main Camera” GameObject
4. Observe the Scene View or Game View

Actual result: Child (red) particles spawn with a varying offset toward the depth-buffer camera
Expected result: Child (red) particles spawn exactly at the parent’s (green) collision point

Reproducible with: 17.0.4 (6000.0.66f1), 17.3.0 (6000.3.8f1), 17.4.0 (6000.4.0b7), 17.5.0 (6000.5.0a6)
Couldn’t test with: 15.0.0 (2023.1.0a2) - Same VFX graph does not import due to missing features

Reproducible on: Windows 11, Arch Linux (user)
Not reproducible on: No other environments tested

Notes:
- Offset only occurs when any Set Position block is enabled on the parent, even with radius = 0
- Offset direction and magnitude vary with the depth-buffer camera’s transform
- Bounce and friction settings on the Collision block do not affect the issue

  1. This is a duplicate of issue #UUM-99470

    [VFX Graph] Particles colliding with Depth slide toward Camera

  1. Resolution Note:

    Thank you for reporting a bug to Unity.

    We have reviewed the issue and found it is a duplicate of an existing bug already logged in our system. To keep things organized and ensure the issue is properly prioritized, we have linked your report to the original case.

    We will now close this report as a duplicate, but the original bug remains open and under review. Your input has been noted and helps us better understand the impact of the issue. If anything changes regarding its severity or impact, please let us know.

    Thank you for helping us improve Unity!

  2. Resolution Note (6000.5.X):

    Thank you for reporting a bug to Unity.

    We have reviewed the issue and found it is a duplicate of an existing bug already logged in our system. To keep things organized and ensure the issue is properly prioritized, we have linked your report to the original case.

    We will now close this report as a duplicate, but the original bug remains open and under review. Your input has been noted and helps us better understand the impact of the issue. If anything changes regarding its severity or impact, please let us know.

    Thank you for helping us improve Unity!

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