The swatch does look like its reflective instead of refractive. They finally changed the black background on mia_material swatches! Lol is it bad that this makes me super excited? Also, I guess it looks tricky because the reflection is totally even across the surface.

Gregori, as Stwert said, you don't have an environment for the glass to refract or reflect. All you're going to see is the "fake" reflection of the light source and the empty void that is Maya's background. Try putting the object inside a poly cube to simulate a room, maybe have it sit on a plane with a checkered texture, I think that would be a start and you'll actually see your glass object when you render.

The warning:

"type rgba_h not supported by iff format, using default type rgba."

means that you're rendering out a 16bit image and the iff file format can't handle it so Maya is automatically making the switch to a compatible bit depth. Either change the image format(EXR,tiff) or go into the "Framebuffer" section of the Quality tab and change the data type to something like RGBA(Byte)4x8bit, a pretty common bit depth for most images we see. I don't know why Autodesk changed one setting and not the other.