Problem

Navigate to Project Sidebar of any project -> Releases -> any Unreleased version:

Diagnosis

Environment

• JIRA 6.4.x
• Only Unreleased versions are affected
• JEditor is installed

Symptoms

• The sidebar disappears (merged into the top navigation bar)
• The hyperlinks of the version's details do not work (e.g. "3 Issues in version" link as in the above image)
• Disabling JEditor brings the proper view and working links back

Cause

JEditor is not compatible with JIRA 6.4.x project sidebar

Workaround

Disable JEditor temporarily

Resolution

Contact JEditor support team for a Fix Version. As of 30 July 2015, JEditor 2.1.6 works well with JIRA 6.4.5.