Collision Sphere attached to SkeletalMesh with 'Collision Enabled' collides despite of being set to 'No Physics Collision'

Hi,
I will explain the bug while listing the reproduction steps.

  1. Create a new Actor Blueprint.
  2. Add a SkeletalMeshComponent
  3. Set Physics->Simulate Physics to true
  4. Set Collision->Collision Presets to ‘BlockAll’
  5. Add a SphereCollisionComponent and attach it to the SkeletalMesh
  6. Make sure it is set to ‘No Physics Collision’ (should be set by default)
  7. Make it big enough to see that it collides with terrain
  8. Place the newly created actor on level and simulate the game
  9. Notice that the new actor collides on the sphere despite it being set to ‘No Physics Collision’

I’m pretty sure this worked fine pre 4.8. There is a hack to fix this and it looks as following:

After doing this ‘trick’ everything works fine again.

PS. FYI this works fine with static meshes.

Cheers,

Hey ,

Thank you for providing detailed information on how to reproduce this issue. I have successfully been able to reproduce this bug and have submitted a report for our developers. If you need to reference this report in the future, please refer to: UE-17336

Have a wonderful day! :slight_smile: