[gopiandcode]

Being slightly cynical here, I'd presume that's not a bug, but rather the intended outcome, and this phenomenon with markdown is just a canary for M$'s impeding extinguish phase (after having embraced and extended git forges like github).

[woodruffw]

Microsoft might be steaming ahead on it, but I think GitHub’s extensions to Markdown predate their acquisition by a few years.

[WalterGR]

Correct on the latter.

GFM (Github-flavored Markdown) - "In 2017, GitHub released a formal specification of their GitHub Flavored Markdown (GFM) that is based on CommonMark." (https://en.wikipedia.org/wiki/Markdown)

Microsoft acquired Github in 2018.