Download XD file from the assets webpage
I'm sure you didn't know this (I didn't 5 minutes ago) but, when you use a jpg file on the assets.adobe.com webpage, you've got SOOOOO MANY more options than for an XD file.
XD file proposes : rename/move/copy/delete
jpg file adds : get a link / load a new version / download
I realize this because I just cannot download one file. I NEED to wait for a full sync of my CC (which won't happen because I don't have enough disk space).
And I know the XD team loves the idea of online documents, but it was offline a couple of times last month and had me almost miss a deadline…