Fix Guide: Sequoia Window Tiling Previews Missing

Symptom: You drag a window to the edge in macOS Sequoia, but the ghost-like "preview" rectangle doesn't appear, and the window doesn't snap.

Why this happens

The "WindowServer" process responsible for Sequoia's new tiling engine can crash or become disabled by a corrupted configuration file.

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Fix 1: Reset WindowServer

1. Warning: This will log you out immediately. Save your work.
2. Open Terminal.
3. Run:

sudo killall WindowServer

Fix 2: Re-enable via Defaults

1. In Terminal:

defaults write com.apple.WindowManager EnableStandardClickToShowDesktop -bool true

killall WindowManager

Recommended Tool: Rectangle

For more advanced window management:

- Get Rectangle for keyboard shortcuts and snapping features that are more robust than Sequoia's default implementation.