Users will need to set their materials to Alpha Composite for it to behave as expected.
Using a translucent material with a 0 opacity does not seem to be working when using a retainer box that is attempting to apply it to the image.
When the material is set to additive or masked, it works as expected.
Result: The image still shows up, even though the material is completely transparent.
Expected: The image would be transparent, having the material applied to it.
Head over to the existingAnswerHub thread and let us know what's up.