I use Ubuntu 12.04 and have the same problem. If I click on a link in thunderbird, and firefox is open on a different desktop, it opens a new tab in firefox but does not switch the focus to the desktop firefox is in. Focus stays on thunderbird.
Related to this, is there any way to cause a new instance of firefox to open in the current desktop when a link in thunderbird is clicked, as opposed to a new tab opening in the firefox on a different desktop?
I use Ubuntu 12.04 and have the same problem. If I click on a link in thunderbird, and firefox is open on a different desktop, it opens a new tab in firefox but does not switch the focus to the desktop firefox is in. Focus stays on thunderbird.
Related to this, is there any way to cause a new instance of firefox to open in the current desktop when a link in thunderbird is clicked, as opposed to a new tab opening in the firefox on a different desktop?