When I try to sync a photo from LR Classic to LR CC, in grid view the thumbnail is displayed as an icon of a cloud w/ an exclamation point, on iPhone, iPad and Web views. Additionally, when I hover over a thumbnail on Web, it displays a message of "Open Lightroom on [computer name] to continue syncing." despite both Lightroom Classic and Lightroom CC being open on the computer.
The thumbnail is displayed correctly in the desktop app. If I make an edit to a photo, the thumbnail then shows up correctly on all platforms.
If I roll back to 11.4 and sync photos, their thumbnails are displayed correctly.
Steps to reproduce:
1. Click the sync icon next to an album in LR Classic, or add a photo from the catalog to an album that has Sync enabled.
2. Wait for the Cloud icon in the upper right corner to display a green checkmark.
3. Open Lightroom on iPhone, iPad, or Web.
4. Look at the thumbnails in the album synced.
Expected result: photo thumbnails displayed
Actual result: icon of a cloud w exclamation point displayed
This is due to an issue in our cloud services - not the Lightroom Classic Product. We are working on a fix on the cloud side. You should need no action on your end while it is being fixed.
The issue is now fixed on the cloud side. New assets synchronized should be rendering properly and assets synchronized prior to the fix are being updated to facilitate their re-rendering. Thank you for your reports and patience.