Either way, the mobile app is now working worse than it was. Now, even standard, non modified custom visuals are not dispalying on my iPhone now. Previously custom visuals straight from the official gallery would display ok. For example, I was using an unmodified CardsWithState custom visual and it was rendering fine yesterday. Now, the tile displays with the title and refresh date, but the content is blank. Also, if I now create a new dashboard with one of the customised custom visuals, the whole dashboard fails to load. All I get is the loading spinner.
Can you update this situation? Are you still working on the fix?