ACR fails to export AVIF HDR files
I was getting great results when editing Nikon D850 and iPhone raw files in ACR, exporting into AVIF HDR (with Display P3 profile). I used the "Convert and Save" button at the upper right corner of the ACR window.
But then I upgraded to the latest version of ACR (16.5.0.1953). Now, when I convert the same files, using the same settings, the AVIF versions only display as SDR, when viewed in Chrome, Photoshop, or GraphicConverter. Nothing else was changed - only the upgrade to ACR 16.5.
If I export to PNG or TIFF, the files display correctly in HDR. It is only AVIF files that are affected. When I examine their metadata, certain HDR records are missing, which were present in the AVIF files exported from ACR 16.4. All my ACR and Photoshop settings are as recommended for HDR output, in tutorials by Eric Chan, Greg Benz, and others.
I tried the usual remedies: rebooting, deleting ACR preference file, cache flush, etc. Is anyone else seeing this? If not, is it possible that my install of ACR 16.5 is corrupted? How should I fix this?
This testing was done on a 16" M1 Macbook Pro, running the latest version of Sonoma (14.6.1).
