Material masking opacity doesn't work with textures on one model?

I was working on a project and decided to try out some effects. One noted: dissolving crystals.

I tested Masking Opacity on a default shape and any other model pre-imported into the project. It worked.

Tested on my model. It didn’t work as I wanted it to. (EDIT: I use blender as my modeling software)

Is my model missing something? Or is it a bug in UE4?

I finished the beta dissolve material. The cube works fine, but the crystals are broken. (I will change the texture so it isn’t as crazy later)

Any ideas on what should I do?