Is the DEV yaml frontmatter broken or changed?

Waylon Walker - May 15 '20 - - Dev Community

I often opt for using the yaml frontmatter of dev rather than the UI as it is easier to replicate from other posts in a similar series. Today I copied one, hit write a post and it did not pick up my frontmatter and told me I couldn't save without a title.

---
title: "What Did You Learn This Week --May 15?"
tags: todayilearned, discuss
cover_image: https://res.cloudinary.com/practicaldev/image/fetch/s--TpOOUw4B--/c_imagga_scale,f_auto,fl_progressive,h_420,q_auto,w_1000/https://dev-to-uploads.s3.amazonaws.com/i/67bb72156h4y13zl5cio.png
series: this-week-i-learned
---
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Is this a bug? Am I doing something wrong? Was there a change to how you use yaml frontmatter, it clearly still works on my old posts?

Update

This is what I see when I post how I used to.

Unable to make post with yaml frontmatter

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