Slate not rendering output as expected

Describe the bug Generated output does not seem to render in slate properly (at least for OpenAPI 3). It does render in Shins as expected. For a test, I used the petstore3.json included in the Widdershins repo.

• [ x ] - I have checked that my input document is valid OpenAPI 2.0/3.0.x or AsyncAPI 1.x

To Reproduce Steps to reproduce the behavior:

1. Command-line: node widdershins defs/petstore3.json -o petstore3.html.md
2. My input file: https://gist.github.com/asanger/489ec74957605200d1f3e010ba9d4cde
3. Place in Slate root directory
4. Visit http://localhost:4567/petstore3.html

Expected behavior Rendering of the document should not appear to be broken in Slate. It should (for the most part) match exactly how Shins renders.

Screenshots When loading this file with shins, I get valid rendering:

When loading this file with slate (cloned repo, no alterations), I get broken rendering:

Versions:

• Node.js: 11.5.0
• Slate: 2.3.1

[asanger]

macOS Mojave 10.14.3

[MikeRalphson]

Should be fixed in version 4.0.0, which includes breaking changes (please see the README.md file).