Hi @user430154. The inner background image being displayed usually depends on the email client. In email clients such as Yahoo and Outlook, the email client is unable to render the image due to the coding we use. This isn't the case for all email clients, as you are seeing with the image displaying on Gmail.
I spoke with our advanced support team and they're going to do some further digging into why the image appears in some background options. They'll contact you via email with updates.
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