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Mac OS 12.0.1
iMac (Retina 5K, 27-inch, 2019)
Lightroom Classic 11.0.1 (same under 11.0.0)
Image doesn't appear in Library Module the same as in Develop Module. Exports to JPEG match the Library view, but not the Develop view. It appears to happen when using Select Subject masks in particular. The first image is a screenshot of the Develop View. The second is an exported JPEG of the same image, which matches the Library view. I'm unable to export a JPEG that matches the Develop view.
You want an accurate preview of the data? You have to view in Develop module at 1:1 or gerater. ALL the other modules use a differing preview architecture. They should be 'close' but there is no guarantee of a visual match. Now if the previews are really out of bounds, it could be a GPU issue, or even a display profile issue.
Thanks, thedigitaldog! It appears that in the Develop Module, if (as you suggest) I view at 100% or greater, the image now appears to match the Library View and the Exported version. Unfortunately, it's the original Develop version that I want! 🙂 But it also appears that if I view at 100% in the Develop Module, then make changes in Fill (less than 100%) view, it all works well. I don't need to zoom to 100% again. Just once seems to do it. This was not the case before LRC 11, at least as far as I know. Plus, it does seem to be a bug that should be fixed.
You can't have what didn't exist (sorry). You can re-edit now that the preview is correct, to produce a color appearance you desire that is previewing correctly.
In LR or Photoshop or any application that zooms out, you'll never get 100% match to color, tone and mostly sharpness because you are not viewing 1 image pixel with 1 screen pixel. The application has to subsample down, to zoom out, the image and that is where a loss of accuracy takes place. Again, even when zoomed out in Develop, the differences shouldn't be that large but, you do need to be at 1:1 or greater if you want to really see an accurate preview.
Your screenshots show a huge difference, clearly suggestive of a bug. Please select the edited raw file, do Metadata > Save Metadata To File, then upload the raw and its xmp sidecar to Google Drive, Dropbox, or similar and post the sharing link here. That will allow Adobe to reproduce the problem (and make it much more likely that, if it's a bug, they'll fix it).
I wasn't able to reproduce the problem in my LR 11.0.1 / Mac OS 11.6, unfortunately.
When I first imported the image, the thumbnail in Library showed the original image and then a few seconds later updated it to the edited image (very similar to what was shown in Develop). I think this longer-than-normal delay in updating the thumbnail is due to Camera Raw recomputing the Select Subject mask (which isn't included in the .xmp file).
However, I did see another bug with that photo and its edits -- Before/After didn't work on it. I reported it here:
For those on this thread:
If you send the affected image to Camera Raw does Camera Raw render it correctly or the same as Lightroom Classic?