TestActor references Shape_Cube_2 and Shape_Cube_3. 
TestActor blueprint shows the logic
2DSideScrollerCharacter blueprint contains the keyboard control logic.

Steps to Reproduce

Download the licensee repro MaterialTest - [Link Removed]

Open in 4.26, hit Play

Pressing C will switch./spawn the mesh referenced visually by "TestActor". One is blue, one is red.
Press X, the current mesh will have it's MaterialInstance cleared to none/black.
Press C again, the meshes still switch but they all are black, the material instances have been cleared from both meshes.

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ComponentUE - Graphics Features
Affects Versions4.26.2
CreatedMay 6, 2021
UpdatedSep 22, 2022
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