I'm using Lightroom Classic 12.4 on macOS 13.4.1 (M1) and iOS 16.5.1.
If I take a photo with the Photos app on the iPhone, then enter a caption, then import new photos to Lightroom Classic using a USB cable, then the caption is nowhere to be found in the metadata on the imported file.
On the other hand, if I AirDrop the same photo to my Mac, the caption metadata is present (from exiftool):
[IFD0] ImageDescription : Photo caption test XZX
[XMP-dc] Description : Photo caption test XZX
Why is Lightroom dropping the captions on import? This is annoying because it's nice to be able to type captions when I take the photo. If I have to enter them later into Lightroom I might forget what I wanted to write.
BTW I do not use Lightroom CC or any Adobe cloud storage. Please do not suggest that as I do not want to pay for their cloud storage - I have enough other cloud storage.