I’m using 4.22.1, I’m not sure if you’re using morph targets but I had an Alembic imported as a skeletal mesh and the material showed up in the editor window but not when I played it in PIE or the selected viewport or when I launched it. Sometimes if I used a non masked material it would.
Long story short I checked the “used with morph targets” under “usage” in the material parameters in the material editor.
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