yes, this seems to a specific type of dropdown login box which some sites ask before being allowed access to it. I normally see in login pages of routers and here for transmission as well which is running from a different server ( see image attached below ).

Whenver firefox is launched, it loads and focuses the last tab which was active before being closed last time. Then almost second later focus is switched from that tab to this old tab which requires authentication. which should not be desired behaviour imo

pls note that homepage is set to firefox default

Firefox comes with two on_demand prefs that determine the behavior on startup. By default pinned tabs are always restored and normal tabs are restored on demand, i.e. if you select them. You can set both prefs to true to open all tabs only when you select them. This also makes startup faster if you have a lot of pinned tabs.

• browser.sessionstore.restore_on_demand = true
• browser.sessionstore.restore_pinned_tabs_on_demand = true

You can open the about:config page via the location/address bar. If you get the warning page, you can click the "Accept the Risk and Continue" button.

• https://support.mozilla.org/en-US/kb/about-config-editor-firefox

thanks this worked, above tab was infact a pinned tab so it was loading automatically at launch.

> browser.sessionstore.restore_pinned_tabs_on_demand = true

this did the trick