Deferred Rendering, Command Buffers, and Reflection Probes?

I've ran into an issue recently where reflection probes are not capturing things I render via command buffers into the deferred g-buffer. I've confirmed the command buffers are being added to the reflection probe camera. They work fine when rendering forward with command buffers.

I downloaded the RenderingCommandBuffers.zip from the docs, set everything to static, placed a reflection probe in the scene and baked it and sure enough the deferred decals are not being captured by the probe either.

Is this a known limitation? If so, could someone elaborate on why it isn't possible? Or is this a bug?