Photoshop 3d video export is not showing lighting

I have created a 3d object in Photoshop which I have animated in a simple, 2-second sequence. [Figure 1.1] I want to export this as a video with transparency/alpha. However, when I try to run the exported render, all that plays is a black screen.

This baffled me a little bit and, while tweaking settings around, I ended up exporting the sequence as PNG keyframes. Once I saw the keyframes, I realized that it is exporting the object properly, but completely without lighting [Figure 1.2].

How do I properly export my 3d object as a video with lighting included?

Figure 1.1: A screenshot of my workspace

Figure 1.2: One of several exported PNG keyframes