Agent sidebar: reopened workspace bumps thread “last updated” time when editing-session tab restores

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Hey, thanks for the detailed report. The repro steps, version, and description of the workflow impact really help.

This looks like an issue with how the sidebar updates a thread timestamp when restoring a tab on workspace startup, especially for threads where Agent has already edited files.

A few quick questions while I’m digging in:

  1. If you start Cursor with extensions disabled using cursor --disable-extensions in Terminal and repeat the steps, does the sidebar timestamp still shift?
  2. Do you have any custom values in User Settings for window.restoreWindows or workbench.editor.*? If you’re not sure, you can share your settings.json with any secrets removed.
  3. If you open the same thread manually after reopen, not via the auto-restored tab, does the timestamp bump, or only when the thread is restored automatically?

Let me know on these and we’ll figure out next steps.