Steps to reproduce
Open sandbox vault and paste the following markdown snippet. The one with markdown define as language will have the first horizontal line rendered. This happen only in Live Preview. Source Mode and Reading View is fine.
```markdown
---
cssClass: wide-page
---
<the rest of your note>
```
```md
---
cssClass: wide-page
---
<the rest of your note>
```
Did you follow the troubleshooting guide?
Yes
Expected result
Should as per second codeblock (the one with md as language, but in Live Preview the md syntax highlighting is not supported)
Actual result
As per explained above and screenshot below
Environment
SYSTEM INFO:
Obsidian version: v1.4.16
Installer version: v1.4.13
Operating system: Windows 10 Enterprise 10.0.19045
Login status: logged in
Catalyst license: insider
Insider build toggle: on
Live preview: on
Legacy editor: off
Base theme: dark
Community theme: none
Snippets enabled: 0
Restricted mode: off
Plugins installed: 0
Plugins enabled: 0
RECOMMENDATIONS:
none
