I often open links in new tabs by Cmd-click on OS X. That typically fails on scala-lang.org. Take https://www.scala-lang.org/contribute/documentation.html#updating-scala-langorg Strangely, the link to http://docs.scala-lang.org/contribute.html works OK, but the one to https://github.com/scala/scala-lang doesn't. Probably some JavaScript interfering? Maybe related to https://github.com/scala/scala-lang/issues/91#issuecomment-235873979