I just wrote a little script to fix it temporarily until the next version comes out:

on ^*:HOTLINK:www.*:*:{
}
on ^*:HOTLINK:$(http $+ $chr(58) $+ *):*:{
}
on ^*:HOTLINK:$(ftp $+ $chr(58) $+ *):*:{
}

on *:HOTLINK:*:*:{
run "C:\Program Files\Mozilla Firefox\firefox.exe" $1
}