Lightroom CC sync with mobile - inconsistent

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Lightroom CC shows that my album is synced and up to date. However, when I check on Lightroom web, some of the photos don't render properly. I've refreshed the browser, closed and restarted, rebooted and also restarted Lightroom CC, to no avail.

The funny thing is, when I zoom in on the images in Lightroom on the web, they look fine:

Any ideas what the problem might be? Of course, in Lightroom CC the photo looks fine. Also they are fine using the Lightroom CC mobile app on ios. I've tried different computers and browser, however, and on the web the problem is consistent with just this one album.

Thanks.