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