Background Images

I know this one has been asked a lot but I have run through everything I could find on these and tinyMCE forums and have not found an answer that works.
SuiteCRM version: 7.1.5

I am attempting to insert an image as a background for a PDF template. The image inserts perfectly fine using the insert image function in the editor so I know it can be accessed. Image type is .png, I have attempted setting background-image after setting background-color in a div and I have also tried setting it as background-image in a table. I think this is probably a TinyMCE issue rather than mPDF as the image does not display in the editor.

When using a div as below the background color sets fine.

<div style="background-color: eeeeee">...</div>

If I override this with a background-image the color is no longer present (as expected) however the image does not display.

<div style="background-color: eeeeee; background-image: url('imageurl.png')">...</div>

Exact same behavior if I do it in a table.

Any suggestions?

Thanks in advance,

Sam

This is a known issue, and can be seen on the SuiteCRM GitHub.

Thanks,

Will.