No Exif data when importing to lightroom mobile on Android phone

For some reason, when I import photos to lightoom mobile, all my exif data is lost. This means when I sync with desktpo lightroom I also get no exif data. This is very annoying!

The problem only occurs when photos are in HEIC format. JPG retains all exif info.

If I copy the photos directly off the phone, or use the inbuilt cloud sync, all exif info is retained, and can be imported to desktop lightroom. When viewing photos in lightroom mobile, all exif information is missing. "no exif information". Again, JPG photos have no such problem, but I'd rather not use jpg and waste phone space.

There is an option in the system to "remove location data" when sharing, but this is turned off, as well as any other settings that might strip exif data when sharing photos.

Phone info:

Xiaomi 12S Ultra

Android 12 , MIUI 13.0.9 (latest)

Lightroom mobile 7.5.1 (latest)

I've searched online, but have been unable to find any info on this.