Wikimedia Bugzilla is closed!

1) Go to this link: https://en.wikipedia.org/wiki/Perfect_competition#Examples

2) You should be on the "Examples" section. Read the first line of the 5th paragraph. It's
"[...] Some believe[who?] that one of the prime examples of a perfectly competitive [...]"
with "[who?]" is placed up-right

3) Print/export -> Download as PDF

4) The same line is rendered as

"Some believeWikipedia:Avoid weasel words that one of the prime examples"

so the "[who?]" is translated into the phrase "Wikipedia:Avoid weasel words". I expected the same behaviour of the wiki page or nothing at all