Screenshot
Steps to reproduce:
1.Open a page with VE
2.Create a heading
3.Undo creating the heading and type something in that line instead
4.Press enter
Observed Result:
Uncaught Error: Inserted data is trying to close the root node (at index 0) is appearing in the console.
See the screenshot attached
Test Environment: http://en.wikipedia.beta.wmflabs.org/
Browser: Chrome Version 26.0.1410.65 & FF 25
OS: MAC OS X 10. 8. 5
Page:http://en.wikipedia.beta.wmflabs.org/w/index.php?title=Test62015&veaction=edit
Version: unspecified
Severity: normal
Attached: