Using Win98 / M12 (1999122023) + standard microsoft mousewheel-mouse: at any page do 'view source', then scroll the (html-)source window using the mouse wheel, then close window: the window is not closed but 'hangs' (I can put focus on window, but no redraw in window happens, console reports no 'focus occured'). Other mozilla windows work unharmed, but if you load new page (click a link), and then try to set focus on the 'hanging' window, mozilla crashes. (Sometimes only after some tries/minutes) Whole thing does not happen if you scroll using standard scrolling bar. Windows crash info: (sorry, german windows version) MOZILLA verursachte einen Fehler durch eine ungültige Seite in Modul APPSHELL.DLL bei 017f:6001316d. Register: EAX=018e4638 CS=017f EIP=6001316d EFLGS=00010202 EBX=006e0069 SS=0187 ESP=0063f994 EBP=0063f9b0 ECX=00000000 DS=0187 ESI=018e1844 FS=0d3f EDX=0063f9ac ES=0187 EDI=00000000 GS=0000 Bytes bei CS:EIP: ff 51 68 39 7d fc 8b 45 08 89 7d 08 74 18 3b c7 Stapelwerte: 018e4638 0063f9ac 018e1844 0063f9dc 00000001 018e4630 00000000 0063f9d4 6096528b 00000000 00000000 018e1840 609652d1 018e1844 0063f9ec 0063f9dc

*** This bug has been marked as a duplicate of 21731 ***

VERIFY duplicate