In the Serials page, when you search by issn, it's frequent to get the issn by an initial copy-paste motion. It also frequent to pick a trailing space in the copy without paying attention to. Problem, the spaces (trailing or leading) are not filtered by the search, so you get no results. The search by issn should remove these spaces. Olivier Crouzet
Still valid. I think removing preceeding and trailing spaces here would be an easy and good fix.