AVIF HDR photos exported from Lightroom not rendered correctly on iPad Pro/iPhone XDR displays

Hello folks, I got some issues viewing HDR photos on iPad and iPhone that have XDR displays.

Setup

• Used Adobe Lightroom (Lr for short) for iPad 9.0.0 8AFC9B/112 to edit and export .AVIF HDR photos.
• Photos were correctly tuned in Lr on an iPad Pro, both color and exposure looks normal in edit previews.

Expectation

• When viewing the AVIF photos on iPad Pro using the Photos app, the photos should look identical to the edit preview in Lr.

Actual Results

• When viewing using the Photos app on both iPad Pro and iPhone, exposure and color are not consistent with the Lr edit preview on iPad Pro—you can see the sky in Lr was correct in blue, the exported AVIF viewed on the same iPad Pro showed a lot of cyan.

Note: The attached file is the photo I took of my iPad Pro: on the left is the AVIF exported from Lr, viewed using the Photos app; on the right is the edit preview in Lr. They were displayed on the iPad simultaneously in HDR mode using iPad's Stage Manager multiple task feature.

Originally I thought it was an Adobe Lr export issue. But I later viewed the exported AVIF in Lr for iPad, and everything looked alright. So I suspected there were rendering issues with the Photos app.

I want to raise the awareness of this issue since HDR exporting in Lightroom is fairly new. I hope everyone can view the amazing HDR photos on Apple devices with perfect rendering. Thanks.