The dashboards are currently embedded in SharePoint Online Modern Pages and leverage the Power BI web part.
Through Thursday (6/30/22) last week everything was working splendedly. At some point over this past weekend something changed. Data was refreshed on schedule with no errors and while the Dashboards load, no HTML content is displayed.
If I hit the Dashboard directly in the Power BI workspace (e.g. app.powerbi.com) the dashboard displays all data correctly.
Display via app.powerbi.com:
Display via embed Power BI webpart in SharePoint Online: