Hi, it actually shows two events sometimes: xev -event button Outer window is 0x3400001, inner window is 0x3400002
ButtonPress event, serial 25, synthetic NO, window 0x3400001, root 0x57c, subw 0x3400002, time 192169015, (41,34), root:(803,559), state 0x10, button 2, same_screen YES ButtonRelease event, serial 25, synthetic NO, window 0x3400001, root 0x57c, subw 0x3400002, time 192169071, (41,34), root:(803,559), state 0x210, button 2, same_screen YES ButtonPress event, serial 25, synthetic NO, window 0x3400001, root 0x57c, subw 0x3400002, time 192169096, (41,34), root:(803,559), state 0x10, button 2, same_screen YES ButtonRelease event, serial 25, synthetic NO, window 0x3400001, root 0x57c, subw 0x3400002, time 192169191, (41,34), root:(803,559), state 0x210, button 2, same_screen YES ClientMessage event, serial 25, synthetic YES, window 0x3400001, message_type 0x146 (WM_PROTOCOLS), format 32, message 0x144 (WM_DELETE_WINDOW) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/141081 Title: Firefox opens 2 extra tabs on middle button click To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/firefox/+bug/141081/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs