That explains.

There are quite a few, at least the ones I came across that has these issues are.

Here, here, here, here, and here.

I’m sure there are more. A good way perhaps is to go by author - bulk of those above come from Justin Ellingwood.

An update to the community site was pushed live yesterday which does include some modifications to the markdown parsing adding a few new features for use mostly in tutorial content. Can you provide the link to the page where you are seeing the issues shown in your screenshots as it appears that this may indicate an issue with the changes that will require a fix.