I've hit a React wall and can't figure something out - Markdown

I’ve reached the end of my knowledge here and I’m asking for help. Any help is appreciated.

I have two errors with my code on this project. First, is the Blockquote HTML never appears (But it passes the test, which is weird). Firstly, yes, I ended up using Showdown instead of Marked, which happened as I started googling before reading the entire instructions, and I missed it…

Secondly, I keep getting this error: "The markdown in #editor is not being interpreted correctly and/or rendered into #preview : expected '<p>testing and…</p>' to equal '<p>testing and...</p>'"

Yet, the HTML is rendering in the preview window in the page…

Your code so far

Codepen: https://codepen.io/Newsworthy/pen/gOPrRPm
Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.97 Safari/537.36.

Challenge: Build a Markdown Previewer

Link to the challenge:

Thank you all.

Your markdown parser is automatically converting three full stops to an ellipsis (look at the failing test: the two lines are not the same). Look at the options for the library to see if you can turn off that functionality.

Thanks Dan, appreciate the help. Will try.