How to reproduce:
1. Open the “ECS_Physics_Bug_Repro.zip“ project
2. Open the “SampleScene“
3. Open the “Entities Hierarchy“ window in “Window > Entities > Hierarchy”
4. Close the “SubScene“ in the Hierarchy
5. Observe the “Entities Hierarchy”
Expected result: One entity is a parent of another
Actual result: None of the entities are parented
Reproducible in: 1.2.0, 1.3.0-pre.4 (2022.3.40f, 6000.0.13f1)
Could not reproduce in: 0.51.1-preview.21 (2021.3.41f1) (“SubScene” does not exist in that version)
Reproduced on: Windows 11 Pro (23H2), macOS 14.5 (by the reporter)
Not reproduced on: No other environment tested
Workaround: Add any Collider Component on the “Root“ GameObject