Hi everyone, After updating to Cursor 3.1, AI changes are applied directly to files automatically—I no longer see the keepFile / UndoFile buttons at the bottom of the chat to review and confirm changes before applying them. Problem Before 3.1: AI showed diff preview + Keep / Undo buttons; I coul…

Hey, this isn’t a bug, it’s a setting. In 3.x, auto-keep was added. If after the update you clicked the Enable auto-keep popup, Inline Diffs gets turned off, and changes get applied without the Keep and Undo buttons. To bring back the review UI: Cursor Settings > Agents > Applying Changes > Inline…

Cursor 3.1: AI applies changes directly, no keepFile/UndoFile buttons—how to enable them?

Support Help

Topic		Replies	Views
How to disable auto-keep Help review	14	2130	June 1, 2026
Cursor automatically applies AI edits without showing diff preview or Undo/Keep options Help review	7	811	March 10, 2026
Cursor 3.5.17 removed Keep/Undo and applies Agent changes directly Bug Reports review	2	184	May 22, 2026
Why is my "keep" button missing? Bug Reports review	1	227	April 17, 2026
After updating Cursor, Agent mode applies file changes directly to disk with no red/green inline diff and no Keep / Undo (or Accept / Reject) controls. Settings that used to control this either don't exist in my UI or have no effect. This removed Bug Reports auto-run , review , agents-window	2	147	June 5, 2026

Cursor 3.1: AI applies changes directly, no keepFile/UndoFile buttons—how to enable them?

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