When creating an issue, when I have entered content and I press escape, a dirty form warning should always display

Steps to reproduce:

1. Open Create Issue dialog
2. Enter some text into description
3. Press escape (dirty form warning should display)
4. Change issue type
5. Press escape

Expected outcome:
Dirty form warning displays

Actual outcome:
No dirty form warning is displayed and changes are lost

Testing notes

Details of Test Heuristics can be found at http://go/stopsu

Stress

• Holding Escape key down shouldn't dismiss the dialog under any circumstances (assuming the form is dirty)

Time

• Press Escape key immediately after pressing another key (changing the form from clean to dirty)

Operations

• N/A

Platform

• jira-quick-edit should have different versions for JIRA 6.3, 6.4 and 7.0
• Browsers: IE 9-11, Firefox, Chrome, and Safari

Security

• N/A

Usability

• Confirmation dialog should never appear if the form is clean
• Confirmation dialog should not appear if the form returns to a clean state

Other

• Should also work for Quick Edit Issue dialog. Initially the form should be rendered as clean