UI Markdown - Mermaid content doesn't render on page refresh

[joepavitt]

Current Behavior

When refreshing the browser, any mermaid content is rendered as raw markdown, instead of a rendered mermaid chart.

Expected Behavior

The mermaid chart should still render as an actual chart after a page refresh

Steps To Reproduce

1. Add a ui-markdown node
2. Paste in the below "Example Mermaid" content
3. View the Dashboard
4. Refresh the Dashboard

Example Mermaid

graph TD;
A-->B;
A-->C;
B-->D;
C-->E;

Environment

• Dashboard version:
• Node-RED version:
• Node.js version:
• npm version:
• Platform/OS:
• Browser:

Have you provided an initial effort estimate for this issue?

I have provided an initial effort estimate

[buschhardtt]

My workaround is:

• add Inject-Node with one time injection after 0.1 sec