I recently made a tool to show article with higher number of pageviews in ptwiki, and I discovered the article "-", that redirects to "Hífen" (hiphen in portuguese) is the second more accessed article, if we compare"-" and "Hífen" pageviews we see that hiphen has very few pageviews compared with "-", so that amount of pageviews is not people wanting to know about the hiphen, it seems like a bug in somewhere that make people unintentionally access that article.

The page has few backlinks, and I can't find any particular page or template that can be making that, it can be many things, a bug in a js script, in Mediawiki, in a robot, or in some external site not related to Wikimedia, I don't know how to discover that. That bug can be making people access the article without wanting to, and it also make pageviews researches less accurate. Someone with access to more detailed pageviews data can discover from where those accesses came?