So I'm using a mesh with a blushing texture that I hide in my character's head to create a blushing face with a shape key. I've done this before with no problem. This time I've run into a problem I've never seen. Parts of the blush mesh seem to cause any mesh behind it to become transparent when I turn on alpha settings, as seen below:
The only difference between this time and last is that I'm using a single texture for both the face mesh and the blushing mesh. Could that be causing the issue?
Here are my transparency settings: