Headers following each other aren't rendered

[ms-studio]

Try to create a README with the following content:

# A

## B

### C

#### D

I would expect to see those rendered as H1, H2, H3 and H4 headers.

What actually happens: A and C get rendered, but B and D don't.

Here is another example, where some of the headers mysteriously don't get rendered: https://github.com/ms-studio/markdown-testing/blob/master/headers.md

The same, more reduced: https://github.com/ms-studio/markdown-testing/blob/master/headers2.md

[kivikakk]

You have non-breaking spaces between the # character and the rest of the header; try replacing them with regular spaces. Per the CommonMark spec, a space is only a regular space (ASCII character 32), not including non-breaking spaces, and headings must have # characters followed by spaces.

[ms-studio]

Wow, thank you for spotting this!

I am generally typing on a qwertz keyboard where the # is produced with alt+3, which makes it easy to follow it with a non-breaking space. Also, my usual markdown editor (ByWord) doesn't make a difference and renders the headers as usual. That's why I was thinking this was a Github rendering issue.