I use ‘Open Link’ myself, which works great on Android, but others have said that in IOS, that will open the image outside of the app. Another option is ‘Open Web View’, but I find that it opens a zoomed in version of the image. I haven’t used ‘Enlarge Image’ (when available) in quite awhile, but at least you have the other two options to consider. Neither are perfect, but it’s something.