Wikimedia Bugzilla is closed!

1. Create a page that has a heading at the very beginning
2. Open it in VE
3. Put the cursor at the beginning of the heading and press Enter
4. An empty heading appears above
5. Use arrow keys or mouse to move the cursor into this empty heading
6. See an error in the console
7. Type into the heading
8. See one error per key press in the console

In Chrome, this behaves correctly: it creates a paragraph above the heading, and typing into it works correctly.