Algebroot Neogears 
"[@byte[]":](/forums/meta/topics/report-site-bugs-here?post_id=5054764#post_5054764
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Basically, the only reason I noticed this was because it appeared when I checked the most recent post in a different forum topic some time recently. It was the first post on a page, and the forum treated it like it (and as a result, the page itself) didn't exist. Even though there was one post. This issue can't be seen now, possibly because other posts were made since then (and as a result the aforementioned post can now be seen normally and the page properly exists).
Sci-fi & Dragons
Basically, the only reason I noticed this was because it appeared when I checked the most recent post in a different forum topic some time recently. It was the first post on a page, and the forum treated it like it (and as a result, the page itself) didn't exist. Even though there was one post. This issue can't be seen now, possibly because other posts were made since then (and as a result the aforementioned post can now be seen normally and the page properly exists).