Not a bug
BYOND Version:511
Operating System:Windows 10 Home
Web Browser:Firefox 63.0
Applies to:Dream Maker
Status: Not a bug

This is not a bug. It may be an incorrect use of syntax or a limitation in the software. For further discussion on the matter, please consult the BYOND forums.
My code looks like this. But when i write new code it looks fine.
Doesn't look like that is a monospace font. Consolas or Courier are pretty standard.
Thanks its fixed
Newer BYOND builds in the 512 series don't let you choose non-monospace fonts for that anymore.
Lummox JR resolved issue (Not a bug)