I searched for the C# keyword on SO and it starts to show the newest activity indicator on top for both Firefox and chrome as below:

enter image description here

However, IE9 does not show the newest activity indicator.

  • 1
    What you see in this page? (When visiting it with your IE9) Commented Mar 19, 2013 at 9:41
  • No web sockets, just like @MadScientist explained
    – Divi
    Commented Mar 19, 2013 at 9:43
  • Yep. No bug, at least not on SE side. :) Commented Mar 19, 2013 at 9:44

1 Answer 1


IE9 does not support web sockets which are used for this feature. As this is an entirely optional feature for SE, there is no fallback for older browsers that don't implement web sockets.

  • Thanks for the explanation, I'll accept your answer when I'm allowed to :)
    – Divi
    Commented Mar 19, 2013 at 9:46

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