I just tested on iPad Pro 12 and iPhone 11 Pro Max and am not seeing the issue with the thumbnails zoomed to maximum size in either portrait or landscape.
Have you:
Restarted the app? Restarted your device? Allowed time for sync?
I have restarted the app and the device, and all photos are synced. There are currently less than 500 iPhone photos in my library. Could it be caused by the HEIC format?
Mine are Heic, JPEG, Tiff, PSD, raw, DNG, etc. I don't see any difference based on image type.
If you are subscribed and fully synced, you might want to consider reinstalling the App. It could be just a bad install. If you are not, uninstalling the App will result in data loss.
I reinstalled the app on both devices and the large thumbnails are still blurry. I reset all edits on some of the images, and the results are still the same.
This is happening to me as well. Large thumbnails in library preview have been perfect, suddenly image quality is inexplicably completely degraded. I’m using IOS 13.4. Logged in and out of app and updated Lightroom to 6.0.1 and toggled every setting. Would greatly appreciate a fix for this. Thanks
@Rikk , is there any updates on this? The last official feedback was "Stand by while I check with the team." 8 months ago. I'd appreciate any updates on further developments. Thanks.