After opening case 02092490, I've learned that there is no way for us to control the data loading message to have any other language, let alone be more specific to the work that is being done during that time.
Attached is the current language and style.
Need a way within the Visualize.js code to allow for at least changing the language of the message. Additional nice to have is to have the message actually express the current work being performed (like, "Running Query", "Calculating Results", Composing Output Design") until the report renders.
Components | Visualize.js |