Got the same thing in IE. Disable ABP same deal. Use Firefox and it works.
Trouble is I prefer IE for the Community.
Have yet to find the root cause. Its been like that since the "upgrade".
Its just in IE though. Its as if you never hit enter or pressed the button.
Setting an exception or even a total disable doesn't work.
FF, Opera, Seamonkey and Chrome are all fine. Go figure.