Make macOS window close hide sessions instead of terminating them

[creeveliu]

Problem

On macOS, users often expect closing a window with Cmd-W or the red close button to dismiss the window without necessarily ending the underlying terminal session. In Warp today, closing the window can terminate the active session, which makes it easy to lose long-running commands or session context when the user only intended to get the window out of the way.

Proposed behavior

• Cmd-W should hide the current Warp window instead of closing the underlying session.
• The Close Window menu action and native red close button should follow the same behavior.
• Clicking the Dock icon should restore an existing hidden Warp window before creating a new one.
• Existing macOS behavior for quit_on_last_window_closed should be preserved when enabled.

Why this helps

This makes Warp behave more like a persistent workspace on macOS: users can dismiss windows quickly while keeping their terminal sessions alive, then return to them from the Dock.

Related PR

• Hide macOS windows instead of closing sessions #9371

[oz-for-oss]

@creeveliu

Here's what I found while triaging this issue:

This matches open PR #9371, which appears to implement the requested hide-on-close behavior for macOS. I found one very similar open issue (#4059), but not enough duplicate evidence to mark this as a duplicate automatically.

Maintainer details

I concluded that macOS close-window actions currently remove Warp windows/sessions, while the requested behavior is to hide regular windows and restore them from the Dock unless quit-on-last-window-closed is enabled..

Triage summary

This is a macOS window-management enhancement request: regular close-window entry points should hide the window and preserve the underlying session, while still honoring quit_on_last_window_closed when that setting is enabled.

Current code review shows the normal close path calls into close_window/close_window_async and then window_will_close, while hiding is a separate hide_window/orderOut path used by other window flows. The Dock reopen delegate currently creates a new window when there are no visible windows, so it would also need to prefer restoring hidden regular windows for the requested behavior.

The requested behavior closely matches open PR #9371, which updates Cmd-W/Close Window/native macOS close handling and Dock reopen behavior. Duplicate search found one very similar open issue (#4059), but not two likely duplicates, so this should not be auto-marked as a duplicate under the current dedupe threshold.

This is my automated analysis and may be incorrect. A maintainer will verify the details.

Powered by Oz

[peicodes]

We don't think this is the correct product behavior. We can be on board with supporting a way to background agent sessions, but we don't want to take over the current behavior of closing a tab/window.