Cursor does not move when entering newlines to start of empty document.

[byronm]

1. Hit enter three times.

Expected: Cursor moves down one line after every enter, ending on the third line.
Actual: Cursor stays in place.

If you click into the editor after the typing, the cursor will jump to the correct position. Also, editor.getDelta() does yield the correct delta. Unfortunately this makes it pretty tough to automate this in webdriver.