Merge Proposal: Rollback Auto-Update

Background
The biggest risk for a site owner when updating plugins is encountering a PHP fatal error that crashes their website. While Core updates are protected by automatic rollbacks since WordPress 3.7 (#22704), no such protection for plugins was added. Although fatal error protection and recovery mode were added in WordPress 5.2, it requires manual intervention from an administrator, and ideally WordPress should be able to recover on its own in a similar way that Core does. The Upgrade/Install team began exploring rollbacks for plugin updates.

This post was originally published on Make Core by Andy Fragen.

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