:::: This is really strange. It looks perfectly fine to me in Chrome, but get this  I always browse Wikipedia with the browser zoomed out to 90%. Try it by pressing Ctrl and -. Zoomed out, it looks fine. Zoom back in to 100%, and it's broken. So odd... Anyway, I think the two edits made to  in November 2014 were responsible for this broken display. I tested the template before those changes and it performed as expected. I've reverted the changes to the template back to the version before November 2014 and the cladogram here is fixed. Let me know if the problem persists for you in different browsers.