Camera: Using Pano Mode With Voiceover

iOS & iPadOS

Hi, I've got an iPhone 7 with iOS 12.4, and the other day I tried taking a photo with the camera app set to pano mode. I had done something like this a couple of years ago, and seem to remember that once you tap the Take Picture button, Voiceover would help you rotate the camera so you could keep up with the arrow. This time around, however, I didn't get the guidance. Plus, when I showed the picture to my sighted wife, she said there was some kind of square covering half the picture. when I first tried taking the pic, I had the phone in landscape mode, but then I re-tried with the phone in Portrait mode, but with no better results. Is there a setting I perhaps am missing, or is there a bug?

Thanks so much for any help!