Steps to Reproduce

1. Create a new page
2. Create a bullet/numbered list
3. In a new line below the list, create a table with some rows. Like this:

   test1
   test2
   test3

4. Save the page (so that the undo/redo history in the editor is cleared)
5. Edit the page again
6. Using IE 9 or 10, try to remove/cut row "test1"

Results

• It's not possible to click anywhere in the editor (the content part)
• The history is empty (unable to undo)

Environment Information

Tested on IE 9 and 10

Workaround

Click "Cancel" button to cancel all edits