Visuals not loading that used to load before in PBI Service

[HughJohnson]

Many of my visualizations in PBI Service are no longer loading. I just get the spinning dots. Even if I wait for several hours they don't load. They worked fine last week then just stopped working. I am using PBI Desktop and published the report to PBI Service and created a dashboard. Data refresh is manual through an OData feed and that seems to be working fine. The dashboard is working fine. A few of the report pages (the simpler ones) are loading ok. The rest no longer load many of the visualizations. It is always the same visualizations that won't load. Slicers, Tables and Tree Maps.