User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; es-ES; rv:1.5) Gecko/20031007 Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; es-ES; rv:1.5) Gecko/20031007 In SeaMonkey, when you open a link in a new tab via de context menu, that tab is bringed to the front. In Firebird, it opens as a background one. It would be good to have the possibility to set in both browsers how do you want them to open, if you want them to open in background or a la seamonkey. Preferentially, with an UI in Navigator-->Tabbed Browsing... Reproducible: Always Steps to Reproduce: 1. 2. 3.
In Firebird, this is in Options, under Advanced, Browsing, and it's called "Open links in background"
In the suite, Edit | Preferences | Navigator | Tabbed Browsing | Tab Display | Load Links in Background.