Created Static Mesh Actor's Simplified Collision boxes do not mirror Collision Orientation when mirrored in the World/Editor.



Steps to Reproduce

Link to Youtube video of user setup:  [Link Removed]

Sample Project for easy static mesh merge actor reproduction:[Image Removed]

1)  Open Unreal Engine 4.20-> Create Blank Blueprint Project.

2)  Drag a Basic Cube Static Mesh into the World/Level.

3)  Scale the Static Mesh to resemble the shape of a rectangle.

4) Duplicate the Actor, Scale the new duplicated actor down to a smaller rectangle.

5) Overlap the smaller rectangle into the larger rectangle.

6) Adjust the rotation of the smaller rectangle to a 15 degree angle.

7) Merge the Actors together.

8) Create two simplified box Collision Meshes, and adhere them to the shape of the rectangle. Apply&Save.

9) Drag the newly created Actor into the World Editor, right click and mirror the actor in the X direction. 

Result: The mesh duplicates and mirrors orientation correctly, however the collision does not. 

Expected: The mesh duplicates and mirrors collision correctly.

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Won't Fix
Affects Versions4.204.214.22
Target Fix4.23
CreatedDec 5, 2018
ResolvedJun 13, 2019
UpdatedJul 8, 2019