Thank you for your post and the screenshot. It appears that your browser for some reason is having issues loading the included CSS to render the report correctly. This could possibly be caused by a security setting that is set in your browser or an extension that is being loaded.
Some things you can try, if you have not already are:
- Load the report while running Chrome in Incognito Mode (this disables all extensions for the current session)
- Try loading the report in a different browser and see if it renders correctly
Additionally, does this rendering issue happen for all users that try to open the report?