Mobile app does not allow external link following?

Our steganography plugin relies on external image hosting but links to the images cannot be followed from the mobile app.
I should clarify and say that the thumbnail images do indeed show up, linked to from our hosting site, but what would work normally in a browser (clicking the thumbnail to load the full image from our host) does not do anything.

Not sure where to put this in as a complaint/feature request to fix, but here it is.