It's true, I stopped paying attention to the AVP after I returned it.

At the time it was released, which is not that long ago, AVP didn't support what I see is now called "mixed immersion mode." Unity's rendering was built upon the cockamamie scheme Apple had at launch and is the one I was describing in my comment, which is all I was familiar with.

Broadly speaking, you caught me, I don't stay up to date about stuff where everyone knows ahead of time that there is no audience. That's not your fault or my fault, it's Apple's fault.