Pager showing only on my dashboard, not on any other user's

I find this module is great, and I spent some time working on some CSS rule to get a pager fitting the look of my page (see screenshot). When I sent the url to my colleague to get feedback, lo and behold the pager does not show up!
I thought it might be permissions, but the content type displayed is accessible to all authenticated users. Besides, if other users had no permission to see the nodes, surely the whole slideshow would have failed to appear, not just the pager...
In the html source of the page, at the place where I see the pager, when I look on another user's dashboard, I see an unfamiliar html tag named <::after>
I included a screenshot of the configuration of the view.