Reproduced 6/6 times.
This seems to affect all "Set" functions for Geometry Collection Components, such as Setting Object Type from Static to Dynamic, or changing Collision Type.

Steps to Reproduce
  1. Create New Blank Blueprint template with Starter Content Enabled
  2. Create new Geometry Collection with many Fractures, keep it above ground in level.
  3. Add Anchor Field to level, overlap with the top half of Geometry Collection
  4. In Geometry Collection Details, navigate to Chaos Physics>Initialization Fields. Click the plus to create new array element, and set index 0 to the Anchor Field you made.
  5. Open Level Blueprint. Add Event Begin Play node & reference to Geometry Collection Actor. Drag off GC Actor Node and get Geometry Collection Component.
  6. Drag Off CG Component node and search for "set enable clustering," ensure box is unchecked, and connect it to the Begin Play node.
  7. Compile and PIE. Observe in World Outliner that Clustering for CG has been disabled.

Actual Result: The Geometry Collection maintains its shape

Expected Result: The parts of the GC not inside Anchor Field should fall apart

Have Comments or More Details?

There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-150877 in the post.

Login to Vote

ComponentUE - Simulation - Physics - Destruction
Affects Versions5.0.2
Target Fix5.4
CreatedMay 2, 2022
UpdatedJul 29, 2023