gzb said:
The problem is that, to me, it seems the wiki is unclear about whether a border has to be an actual line separating two areas of an image. In the case of post #7228895, the two areas are positioned right next to each other and while you can clearly see the division, there's no actual "physical" border between the two. I may be overthinking this but I'd like some confirmation.
No offense at all, but perhaps you're indeed overthinking. If you take ten minutes to see all the images under the tag, there's a great variety of images where the border doesn't physically affect to the characters or the background (For example, post #6178001 and post #6297215) other images where the border was made to emulate a camera effect (For example, post #6522816 or post #4477730), and some images are similar to the one you shared (For example, post #6366143 and post #6442067).
Although, I can't blame you for overthinking. As magcolo said, the tags round image and circular border are redundant and ambiguous about their usage. So, for now, you can add or not the aforementioned tags.