The sleep state will be overwritten in ClusterUnionManager::UpdateAllClusterUnionProperties.

Clustering using AClusterUnionActor results the same behavior as well.

Steps to Reproduce
  1. Place two geometry collections on the level
  2. Select the actors in the geometry collection
  3. Set the StartAwake property to false in the Details pane
  4. Start PIE
  5. Ensure that the geometry collections are asleep and stationary
  6. End PIE
  7. Select the actors again
  8. Set ClusterGroupIndex to 1
  9. Start PIE


Clustered rigid body awakens and falls

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ComponentUE - Simulation - Physics
Affects Versions5.35.4
Target Fix5.5
CreatedMar 27, 2024
UpdatedApr 5, 2024