On the page https://bugzilla.xfce.org/enter_bug.cgi?classification=__all on the left side (where the apps are listed) '‑' is used as a dash. However, this is not the 'normal' dash. On the right side (where the description is) the normal dash is '-' used. The look might be the same. The search results will be false, however. Feel free to search for the different type of dashes in your browser. I tested with Firefox as well as Konqueror.
I'm aware there are different kinds of dashes, but I can't find the difference between the ones in the component title or description ones. Please be more elaborate if you are still seeing this bug.
I cannot reproduce the bug anymore. Seems like someone fixed the problem already. Hence I close this bug report.