editing the pasteboard image

[frightful]

Hi

Using XD Pro X9 building a website.

I am having a problem when I want to access the fly out to change the way that the pasteboard image looks fixed/tiled/etc


I right-click and sometimes I get this option for 'pasteboard background' but often I don't.
I've tried all sorts of combinations of the screen state and which parts of the page I am working on...

Any ideas why this should be. I''m missing a trick somewhere.
Thanks in advance for any suggestions.
David