Hi Roberto,
Thank you for reaching out to us regarding the issue you are facing with the Card component in both the material3 and material-dark themes. We have thoroughly reviewed your query and have examined the Card component in both themes.
Material 3 theme card component: https://ej2.syncfusion.com/aspnetcore/Card/BasicCard#/material3
Material 3 dark theme card component: https://ej2.syncfusion.com/aspnetcore/Card/BasicCard#/material3-dark
After careful analysis, we found that there is no specific background effect applied to the Card component in either theme. To further assist you and gain a better understanding of the issue, we kindly request you to provide us with more details. Specifically, we would like to know if this background issue occurs when the chart is placed outside the card component or only when it is placed inside the card component.
In order to assist you more effectively, it would be greatly appreciated if you could share a video illustration of the issue you are experiencing. This would allow us to gain a deeper understanding of the problem and help us in resolving your concern in a timely manner.
Regards,
Kokila Poovendran.
