Issue Summary

When typing "---" in a bulleted list, it hides all the information inside the list.

Steps to Reproduce

1. Create a bullet list inside a card description
2. Add a bullet cascade and type "---".
3. Save the changes.

Expected Results

See the entire bulleted list with all the information below "---"

Actual Results

All the information disappears from front-end but is still present under the "View Markdown" tab

Workaround

None available