It seems Google Chrome has now COMPLETELY fixed this issue (Version 21.0.1180.83). So open any flash video and you can press all your favorite key combinations ! (Like Ctrl + T, Ctrl + Tab, Ctrl + F4 / Ctrl + W etc. ). This problem has historically affected Chrome as well, and it was the only respite Firefox had.
*** IMPORTANT UPDATE***
It seems Google Chrome has now COMPLETELY fixed this issue (Version 21.0.1180.83). So open any flash video and you can press all your favorite key combinations ! (Like Ctrl + T, Ctrl + Tab, Ctrl + F4 / Ctrl + W etc. ). This problem has historically affected Chrome as well, and it was the only respite Firefox had.
Firefox STILL cannot do that.