When the Grid has scrollable.virtual enabled and pdfExport.allPages set to true, the loader is actually displayed, but it gets hidden immediately when the next page is loaded for exporting. This leads to the loader appearing as not visible. https://dojo.telerik.com/QlIlIbTZ

I would like the progress bar functionality to be improved and to have built-in support for displaying a progress bar in the virtual Grid when exporting all pages