The resolution of page backgrounds in Power BI Desktop reports are smaller than those that are published to Power BI Services.
Please ensure you are using the same page view setting both in Power BI desktop and service: https://docs.microsoft.com/en-us/power-bi/power-bi-report-display-settings
If issue persists, please share a sample pbix file with us to test it. You can upload it to your OneDrive and send the share link to me via private message.
Best Regards,Qiuyun Yu
Thanks for your information. I have reported this issue internally: CRI 92306860. Will keep you update once I get any information.
Please set Image fit as Fit instead of Normal.