[FF] It is impossible to exit styled list with Enter Key.

[Jakub Ś]

1. Open replacebycode.html sample
2. Clear page with New Page button and click on one of list buttons to insert list
3. Type "test1", Hit Enter, "test2", Hit Enter, "test3" and then stop
4. Press Ctrl+A to select all text
5. Select font-size 16px from Size dropdown
6. Click behind 3 in test3 to change selection (You need to press Enter in such way that selection changes but cursor is still in span)
7. Press Enter, press Enter and so on

Result: Items get created and you can't leave the list that way.

NOTES:

1. This TC won't show errors with list pasted into source
2. This is reproducible only in Firefox from CKEditor 4.0