There is a problem with automatically detecting external metadata changes in HEIC files.
I have Lightroom Classic (9.0, latest 11/2019 version) installed on two networked computers as allowed by the license: a desktop and a laptop. Both machines have "automatically write updates into XMP" set.
Once I import and develop our travel photos on my desktop, my wife synchronizes the pictures folder on her laptop, sometimes adds captions, and picks photos to print for scrapbooks by setting those photos to "Green". I then synchronize the shared pictures folder on my desktop and order prints of the ones she picked.
This system works great for .JPG and DNG files produced by my Nikon SLR. But we also use our iPhones at times when I don't want to carry the SLR. On this last trip, I set our iPhones to produce HEIC files because Lightroom now supports these. After importing and developing, we set the color of the photos on the laptop to green, I synchronized the folders on my desktop and while the green color appears on the JPG and DNG files, the color does NOT appear on the HEIC files unless I manually "Reload Metatadata From Files". I can go to the laptop, set the color, and force the metadata to be saved -- it still doesn't appear in Lightroom on the Desktop if I only synchronize the folder. I have to "Reload Metadata" on the photos and then the color appears.
The colored HEIC files are also not marked as being in conflict on either machine (don't know about captions or titles as none of these had those). Lightroom is simply not detecting that the color metadata has changed on disk because "synchronize folder" doesn't pick up the color change, but "Reload Metadata" does.
Adobe: please reproduce this and fix. Both machines have Adobe version 9.0, Camera Raw 12.0, and the about box says "Build [201910151439-b660523e]. Thanks!