Not recently, but yes it has. There's a cog over on the right top of the screen that allows you to refine your search (e.g. for large, medium or small). Click on the image you want and it should give you the option of either 'visit page' or 'view image'. It could be that you've chosen images that, for whatever reason, don't allow you to do that (e.g. because they're copyright). I can't replicate the problem you describe - from that point of view, it seems to work for me much like it's always worked.
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