Since a few months ago Reddit has decided that they want to control your actions/annoy/control your attention1 even more. If you try to open an image hosted with them, the image itself won’t just open, but a full web page will open with styled header and footer.
That is, if you go to a Reddit photo link like
https://i.redd.it/vchz7tqd61ib1.png (this is a real link, if you click it you can experience what I explain in the post, but also will be registered by Reddit2), instead of loading the photo itself, which is how browsers/internet would normally work, it redirects to another page that has the photo in the middle.
Apart from that itself is quite hostile and a bad practice, as it usually happens, this also has consequences. If you want to open the image to check on it, zoom on it to a specific level (but not full zoom) or other things, you may be hindered or it may be impossible.