Reference previews on mobile are implemented quite differently from what we provide with the popups extension. If..
- I am an anonymous user
- I have reference previews enabled on desktop view
- Open the mobile view
- Hover a page preview
- Get into the settings using the cogwheel
- I get this view
{F34431488}
Which makes no sense.
Viewing references on mobile works completely differently than in desktop view. When you click a footnote in the text on mobile you get a small "popup" with the content of the reference. This has nothing to do with the Popups extension and you don't see reference previews like in the desktop version. So having a checkbox there, that is a setting for the "desktop" reference previews makes no sense. And since the "mobile" reference previews can't be disabled it makes twice no sense.
Even assuming the user understands, that this checkbox is meant for the "desktop" reference previews, it's showing a wrong setting. It's unchecked even though it's not disabled on the desktop view.
We should probably hide the reference preview setting on mobile.