Developer Notes

No longer occurs in 4.12


When using multiple collision boxes with the mesh scaled in a negative axis while the collision boxes are rotated that the rotation is not taken into account when using the negative scale.

Steps to Reproduce

1. Open UE4
2. Use any static Mesh (used engine cube for this test)
3. Add another collision box and pull away from main mesh (setup video attached for demonstration)
4. rotate collision box
5. Place mesh in the scene
6. Enable show flag for collision
7. Scale the mesh in the negative for X, Y, or Z axis.

Expected: The collision rotation will be taken into account when using a negative value for scale of a mesh.

Results: The collision box that is rotated is not lined up correctly with the mesh when using a negative value in the X, Y, or Z axis.

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Cannot Reproduce
ComponentUE - Simulation - Physics
Affects Versions4.74.84.9
Target Fix4.13
CreatedMay 15, 2015
ResolvedJul 11, 2016
UpdatedApr 27, 2018
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