Ok John,
Hang on there i’m going to go in there an look around and see what you talking about.
Oh ok I see what you mean. It does the same with other text effets. It’s prolly because Motion can’t do it.
You could try duplicating the layer, making it black, and making it bigger and stuff to mimic a shadow. If you would want to try that I would be glad to help you out if you want!
But I’m not sure that that is possible. But keep trying.
You might try calling Apple.
Sorry I couldn’t help!
AJ!