I have several visualizations that work in desktop mode but appear blank after publishing. These worked at one point in time but now they no longer work. Sometimes you can see the data for a split ...
So frustrating, but true! My report broke due to being a true/false boolean value in PBI Desktop (worked fine) but shows BLANK values in PBI ONLINE! I switched it to 'text' and so far, so good...
I've filed a bug/ticket with the Power BI team. This needs to be fixed so we don't break newly published reports!!