Markdown is not formatting correctly starting from v4.2.3

[arman-g]

Marked version:
v4.2.3 and later

Describe the bug
Some of the markdown is not formatting correctly (see the reproduce section below) starting from version 4.2.3. All the versions prior to that are formatting correctly.

To Reproduce
Please see the Marked Demo link below.

1. Marked Demo

2. Expected behavior
   Should format the markdown correctly.

[UziTech]

Looks like this was broke by #2655

[UziTech]

This can be easily fixed by formatting the markdown correctly. Block level elements should have a blank line above and below them. Adding a blank line above the bottom line fixes it. demo

[arman-g]

This can be easily fixed by formatting the markdown correctly. Block level elements should have a blank line above and below them. Adding a blank line above the bottom line fixes it. demo

That worked well, thanks!

[calculuschild]

This can be easily fixed by formatting the markdown correctly.

@UziTech is this working as intended then? Seems the issue occurred due to invalid syntax?

[UziTech]

I think this is still technically a bug because it does not do the same thing as CommonMark even though the markdown is not well formatted.

[azmy60]

Can I take this one?

[UziTech]

@azmy60 sure