An update:
The problem that you encountered is due to a lack of support on our cloud services for custom camera profiles.
Additionally, we recently changed where previews were generated, moving them from Lightroom desktop to our cloud services, in order to improve performance.
But, given the lack of support for custom profiles, there is no way to create the same previews you get on the desktop.
We are looking at changing back the behavior in the case of custom profiles, in order to address yo
...