When importing an Alembic file into the engine, the UV's appear rotated and missing textures for certain faces. This can cause stretching within the UVs which is what is being reported in the post provided in the link.
This issue appears when you import as an Alembic Static Mesh or as an Alembic Geometry Cache format.
1. Download and Open attached project.
Outcome The UV's of the Alembic Cube are rotated and missing textures.
Expected The UV's are identical to the FBX model in the scene.
Head over to the existing AnswerHub thread and let us know what's up.