Markdown preview does not working display the result properly

Summary
Markdown preview does not working display the result properly

Steps to reproduce:

1. Edit/create any Confluence page.
2. Click Insert -> Markup
3. Paste the following script:

   | Day     | Meal    | Price |
   | --------|---------|-------|
   | Monday  | pasta   | $6    |
   | Tuesday | chicken | $8    |
   

   From this documentation, the script should be able to display properly in Markdown preview.

The Current Result
The preview shows like the below image:

The Expected Result
It should show the table display like the below result: