I would try, but it takes a fairly unique set of code screw ups. I think there are several that will do it, but I doubt anyone would remember what any of them are.
In this case, it was just some extraneous bb code. Either there was some tags missing, or too many, or some were partial, or some combination of them. All I know is that I could see some tags (or was it partial tags) in the post, and suspected they were causing it.
If you know how to fix bb tags, and it happens again, all you gotta do is fix the tags. Usually. 
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I'm not likely to be around much longer. As before when I first signed up here years ago, I'm finding that after a long hiatus, and after only a few days back on here, I'm spending way too much time here again already. So I'm requesting my account be locked, banned or whatever. It's just time. Until then, well, I dunno...