The Editor will display a seemingly empty page when trying to edit a page with a very specific format of macros. The editor is actually displayed underneath the visible screen and requires scrolling to get to. Save and Cancel buttons do not work when it's displayed this way.

Refreshing the Editor once it's loaded once will display the page for editing properly, however each time the page is edited the first load will be displaying incorrectly.

Steps to Reproduce

The page needs to have this structure of macros in it.

1. Create a Section macro
2. Type some text
3. Click the 'bulleted list' button.
4. Enter a new line with some text
5. Enter new line
6. Now type {expand} to insert an expand macro
7. Enter some text inside the expand macro
8. Put your cursor back on the empty line before the expand macro, and type some text then hit enter
   • The Cursor will now jump beyond the Expand Macro
9. Save the page.
10. Edit the page again
    • The editor screen is now broken

Workaround
To be able to edit the page normally, Edit the page and reload your browser, the Editor will now be shown properly.
Then remove the Bulleted list from the Expand Macro blocks. You will need to reinsert the expand macro as the expand macro will not work correctly until removed and reinserted.