In a question on Security.SE, I've found a possible bug.
The left side of the screenshot is how it looks on the front end of the site, and the right side shows how it looks when editing.
You might say that there is a space between braces, but it doesn't matter I think. My point is that there is a difference between the edit preview and the published version.
[4]
into a[8]
, the link is still clickable even though 8 is not a valid reference. Not sure if this is a real critical bug.Your[4]
isn't doing anything to the link before it since there is a space between them as you know.