Encontrei o mesmo problema aqui , e aparentemente foi resolvido alterando a localidade do sistema para inglês e vice-versa. Eu fiz isso e funcionou, agora 8x12 está de volta lá novamente.
Aqui está o meu registro:
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Console]
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Console\Nls]
"00000412"=""
"00000804"=""
"00000411"=""
"00000409"=""
"00000404"=""
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Console\RasterFonts]
"woafont"="dosapp.fon"
"CGA40WOA.FON"="CGA40WOA.FON"
"CGA80WOA.FON"="CGA80WOA.FON"
"EGA40WOA.FON"="EGA40WOA.FON"
"EGA80WOA.FON"="EGA80WOA.FON"
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Console\TrueTypeFont]
"0"="Lucida Console"
"950"="*細明體"
"932"="*MS ゴシック"
"936"="*新宋体"
"00"="Consolas"
[HKEY_CURRENT_USER\Console]
"ColorTable00"=dword:00000000
"ColorTable01"=dword:00800000
"ColorTable02"=dword:00008000
"ColorTable03"=dword:00808000
"ColorTable04"=dword:00000080
"ColorTable05"=dword:00800080
"ColorTable06"=dword:00008080
"ColorTable07"=dword:00c0c0c0
"ColorTable08"=dword:00808080
"ColorTable09"=dword:00ff0000
"ColorTable10"=dword:0000ff00
"ColorTable11"=dword:00ffff00
"ColorTable12"=dword:000000ff
"ColorTable13"=dword:00ff00ff
"ColorTable14"=dword:0000ffff
"ColorTable15"=dword:00ffffff
"CursorSize"=dword:00000019
"EnableColorSelection"=dword:00000000
"ExtendedEditKey"=dword:00000000
"ExtendedEditKeyCustom"=dword:00000000
"FontFamily"=dword:00000000
"FontSize"=dword:00000000
"FontWeight"=dword:00000000
"FullScreen"=dword:00000000
"HistoryBufferSize"=dword:00000032
"HistoryNoDup"=dword:00000000
"InsertMode"=dword:00000001
"LoadConIme"=dword:00000001
"NumberOfHistoryBuffers"=dword:00000004
"PopupColors"=dword:000000f5
"QuickEdit"=dword:00000000
"ScreenBufferSize"=dword:012c0050
"ScreenColors"=dword:00000007
"TrimLeadingZeros"=dword:00000000
"WindowSize"=dword:00190050
"WordDelimiters"=dword:00000000
"CurrentPage"=dword:00000001
"FaceName"=""
Este trecho não tem "949" = ... em [TrueTypeFont] graças a algum filtro genial do StackExchange.