No-break spaces don't work in Markdown titles in GitHub comments

no-break-space.md

See comment below. (It renders fine here but shows an indentation.)

Screenshot:

In the atom editor, a no-break space (alt+space on OSX) is shown as a small dot.

In Sublime Text 2 and 3, with draw_white_space: all, it renders as blank whereas a regular space is a small dot.

Source:

# Regular space after `#`

# No-break space after `#`

Does the Markdown parser differ between Gists and Comments? In comments it breaks (as, you say, expected), but in a Gist it renders fine.