Preview window in VS Code is missing images when previewing markdown

[Chuxel]

Product and Version [VS/VSCode]: VS Code 1.20.0-insiders
OS Version [macOS/Windows]: macOS and Windows
Live Share Extension Version: 0.2.58
Target Platform or Language [e.g. Node.js]: Markdown

Steps to reproduce:

1. Owner: Clone https://github.com/MicrosoftDocs/live-share
2. Owner: Open README.md
3. Owner: Share
4. Participant: Join from VS Code - README.md should appear
5. Participant: Click on the preview split pane icon in the upper right corner 

Expected: Markdown preview for README.md appears with images.
 
Actual: Markdown preview appears but is missing images and a message that says "Some content has been disabled in this document" This is true both for "bang syntax" images and inline HTML w/relative path src entries.

[kmasuyama]

I'm also looking for images to be supported over liveshare.

An image link to a local file working properly on my host vscode instance shows up as a broken link (thumbnail + alt text) on my guest instance. Using a web-hosted image link works fine.

Also, plantuml diagrams supported by the markdown-preview-enhanced extension show up as Error: write EPIPE.(edit: working now, not sure what changed)

To reproduce:

1. install markdown-preview-enhanced
2. preview sample markdown code

---

This is now working (edited)

```puml
@startuml
start
:hoge;
stop
@enduml
```

This does not work
![alt text](image_in_same_folder.jpg)

This works
![alt text](https://visualstudiomagazine.com/articles/2019/06/05/~/media/ECG/visualstudiomagazine/Images/2017/08/0817vsm_vs_code_icon.jpg)

---

Product and Version [VS/VSCode]: VS Code 1.36.0
OS Version [macOS/Windows]: Windows 10 1809
Live Share Extension Version: 1.0.488
Target Platform or Language [e.g. Node.js]: Markdown

[fubaduba]

This issue has been closed due to no recent activity. We have made many updates to Live Share since this issue, and incorporated a lot of the feedback. Please re-open the issue if the problem still persists.
-Live Share team