Steps to replicate

1. Create a page with text and code block macro.
2. Save the page.
3. Copy the text and Code block macro in the page View mode.
4. Edit other page and paste the copied text and code block macro.
5. Save the edited page.

Expected Result
The code block macro will be pasted correctly with the formatting.

Actual result
Only the code inside the code block macro is visible when viewing the edited page.

Diagnosis
Edit the edited page by removing the pasted code block macro and create the new table at the same area and save the page. You will notice that the table formatting will break in the page "View" mode.