however, doesn't seem to be fixedsys font...kinda looks more like arial
That's unlikely, triple check that you have the font installed, if so, it's probably fixedsys..
tried your command and it indeed made it larger, however, doesn't seem to be fixedsys font...kinda looks more like arial. tried it with the -11 and youre right..that drops it back to fixedsys 9
tried the command with -10 and although its listed as 10 it actually looks more like 9
There is definitely a bug imo... Let's see if Khaled sees this and reply, otherwise making a bug report would be a good idea.