editor is crashed when there are nested tags

[annashipilo]

Hello! We are using your editor. And we faced such an issue.
If markdown contains something like this <span><span> ffff </span></span>
the editor is crashed with such an error in the console

it's also reproduced on the demo here: https://rexxars.github.io/react-markdown/

[ChristianMurphy]

#428 resolves this

[wooorm]

This may also be fixed 5.0.0, with this change. Could someone confirm whether that works? Otherwise it’s just the HTML parser being funky and the plan is for that to be replaced next major.

[wooorm]

This is also a duplicate of #385, so I’ll close this, and we can continue discussing over there