Slipwatch

Who moved my deadline?

Slipwatch is a Jira Cloud app that shows who moved which due dates, by how many days, and why.

Watch: every due-date change in a project: who moved it, when, and by how much.
Ask: when someone moves a due date with the work item open, Slipwatch asks them why. It never blocks anyone.
Enforce: due dates change only through Slipwatch, with a reason. Needs a paid Jira plan and a company-managed project.

Slipwatch is not on the Atlassian Marketplace yet.