Screenshot of the error

Steps to reproduce:

1.Click on the edit button
2.Add few references to the page
3.Go to more>Transclusion
4.Add the template reflist
5.Delete this template
6.An icon still appears for that template click on it
7.When the dialog for that template appears cross it out.
8.Click the button "Save Page"

Observed Result:
The Save page button does not work.User cannot save the edit made so far on the page. It requires to cancel the edit and reopen the editor.

The js error that appears on the console is:
Uncaught Error: Cannot open another window while another one is active

See the screensshot attached

Test Environment: production
Browser: Chrome Version 26.0.1410.65 & FF 25
OS: MAC OS X 10. 8. 5
Sample Page:https://en.wikipedia.org/wiki/User:RYasmeen_(WMF)/test_reference?veaction=edit

Version: unspecified
Severity: normal

Attached: