>>>>Thanks, Sergey. I'd rather avoid 3rd party extensions but I might look into it later.
>>>
>>>It seems that several things that are built-in in Opera, must be installed separately in FireFox.
>>
>>For me several things are not working. I think, it's because of firewall, but I were unable to activate them and have to live with limitations :(
>
>What version of Opera are you using? And what is not working?

Version 7.54 Note, when I click Help, About, it opens a window inside the current window, e.g. UT. So I had to re-login to UT.

When I use search, I can not search by specific user (e.g. when I click on this button, the new window is not open). I have similar problem with other popup windows...