When using DetachActor, the collision for the mesh is detached, but the mesh remains attached to the blueprint. This causes the mesh to fall through the floor while leaving the collision behind.

Regression (yes) issue (does not) occur in 4.11.2

Steps to Reproduce
  1. Download, unzip, open attached project
  2. Open CubeTestMap
  3. Press PIE


Boxes fall to ground, once detach occurs, several attached cubes fall through floor. If player moves camera they can run into invisible boxes where the assets collision remains.


Several boxes detach and collide with floor.

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ComponentUE - Gameplay
Affects Versions4.12.3
Target Fix4.13
Fix Commit3067451
Main Commit3058682
Release Commit3067451
CreatedJun 27, 2016
ResolvedJul 27, 2016
UpdatedApr 27, 2018