Closing down windows and tabs
If i open firefox and then open a new window or tab in firefox with the same adress, it will close it down. Why would anyone want that function? The reason i open the second tab our window is because i want them open simultaneously of course. Damn that was one annoying feature, it even changes window if i have multiple tabs open and one tab i the same as in the other window, jesus.
Wšykne wótegrona (2)
There are sites that detect a second window or tab and show an error. However, sites shouldn't be able to close a tab that you opened yourself from the address bar, a bookmark, or a search results page. Sites *might* be able to close tabs for links opened from their site.
If it's not the site:
Firefox doesn't care about duplicate tabs, but maybe you have an add-on that clean up duplicate tabs?
How are you opening this new window? From within Firefox or externally via the Windows taskbar or otherwise (desktop shortcut)?
Musyśo se pla swójogo konta pśizjawiś, aby na pśinoski wótegronił. Pšosym stajśo pšašanje, jolic hyšći njamaśo wužywaŕske konto.