Verified for macOS Tahoe 26.2

Fix Guide: Sequoia Stage Manager Window Order Resets

Symptom: After a reboot or waking from sleep, Sequoia Stage Manager loses the custom grouping and layering order of your application windows.


Why this happens

The WindowServer database that stores Stage Manager "sets" can become corrupted, leading to a default reset of window positions.

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Fix 1: Delete the WindowServer Preferences

  1. Open Terminal.
  2. Remove the corrupted preference file:

rm ~/Library/Preferences/com.apple.WindowManager.plist

  1. Log out and log back in to recreate a fresh file.

Fix 2: Reset Stage Manager via Defaults

  1. Run the following command in Terminal:

defaults delete com.apple.WindowManager

  1. Restart the Dock:

killall Dock