Or for Safari which has not worked on my mid-2014 MacBook Pro for over a year now! Still jams even with this latest beta update.
Sadly, though not a fan of Google I must admit their latest version of the Chrome browser ( a recent updated and welcome 64bit app) works flawlessly.
What do you mean by "jam"? I am pretty sure it's isolated problem because my Safari works like a charm. If you could explain how the "jam" occurred, I will try reproduce it on my machine and see if I would have the same problem. Otherwise I am confident to say that it's a local error.