switching from Rich Text to Wiki Markup editing view corrupts wiki markup when Wiki Markup is not default view

When switching the editor from Rich Text mode to Wiki Markup mode, the wiki markup can be corrupted if Rich Text is the default view. Specifically this happens with multiple levels of bullet points and macros. However, if Wiki Markup is the default view this does not happen.

Steps to reproduce

1. create page
2. click Wiki Markup editor
3. add a bullet with a macro defining the text color:
4. hit Return to add a new line
5. add a second level bullet directly below the first:

   * {color:red}hello{color}
   ** oh hai
   

6. Save
7. observe that everything looks good
8. Edit
9. switch to Wiki Markup view
10. observe that the line break is removed between the color macro and the second level bullet
11. Save
12. observe that the bullet hierarchy is now well effed