diff --git a/crates/trawler/src/main.rs b/crates/trawler/src/main.rs
--- a/crates/trawler/src/main.rs
+++ b/crates/trawler/src/main.rs
@@ -3271,9 +3271,13 @@
 /// A window caption button (min/max/close) for the client-drawn titlebar.
 /// The `WindowControlArea` maps its bounds to the platform's native
 /// non-client hit-test (HTMINBUTTON etc. on Windows), so hover flyouts
-/// (Snap Layouts) and clicks are OS-handled there; the `on_click` attached
-/// at the call site covers paths that deliver plain clicks instead (e.g.
-/// the test platform).
+/// (Snap Layouts) and clicks are OS-handled there — including the
+/// maximize/restore toggle. Deliberately no `on_click`: GPUI replays
+/// non-client mouse events through the scene first, and a click listener
+/// would consume them (stop propagation), suppressing the native handling
+/// — with no way to restore a maximized window from app code
+/// (`Window::zoom_window` only ever maximizes on Windows). A platform
+/// that delivers plain clicks instead would need `on_click` fallbacks.
 fn caption_button(
     id: &'static str,
     icon_path: &'static str,
@@ -3850,7 +3854,6 @@
             .flex()
             .flex_col()
             .key_context(APP_CONTEXT)
-            .track_focus(&self.root_focus)
             .on_action(cx.listener(Self::navigate_back))
             .on_action(cx.listener(Self::navigate_forward))
             .on_action(cx.listener(Self::toggle_quick_open))
@@ -3988,10 +3991,7 @@
                     )
                     .child(
                         caption_button("caption-min", "icons/minus.svg", WindowControlArea::Min)
-                            .hover(|d| d.bg(rgb(0x2a2a3a)))
-                            .on_click(cx.listener(|_, _: &ClickEvent, window, _| {
-                                window.minimize_window();
-                            })),
+                            .hover(|d| d.bg(rgb(0x2a2a3a))),
                     )
                     .child(
                         caption_button(
@@ -4003,24 +4003,30 @@
                             },
                             WindowControlArea::Max,
                         )
-                        .hover(|d| d.bg(rgb(0x2a2a3a)))
-                        .on_click(cx.listener(
-                            |_, _: &ClickEvent, window, _| {
-                                window.zoom_window();
-                            },
-                        )),
+                        .hover(|d| d.bg(rgb(0x2a2a3a))),
                     )
                     .child(
                         caption_button("caption-close", "icons/x.svg", WindowControlArea::Close)
-                            .hover(|d| d.bg(rgb(0xc42b1c)).text_color(rgb(0xffffff)))
-                            .on_click(cx.listener(|_, _: &ClickEvent, window, _| {
-                                window.remove_window();
-                            })),
+                            .hover(|d| d.bg(rgb(0xc42b1c)).text_color(rgb(0xffffff))),
                     ),
             )
-            .children(view_header)
-            .children(breadcrumb_bar)
             .child(
+                // Everything below the titlebar, and the app's click-to-
+                // focus scope. `track_focus` must NOT cover the titlebar:
+                // its implicit mouse-down listener prevent-defaults every
+                // left click, and the Windows backend treats a handled
+                // synthesized non-client mouse-down as "don't run the
+                // native handler" — which is what implements caption drag,
+                // double-click maximize, and the caption buttons.
+                div()
+                    .flex()
+                    .flex_col()
+                    .flex_1()
+                    .min_h_0()
+                    .track_focus(&self.root_focus)
+                    .children(view_header)
+                    .children(breadcrumb_bar)
+                    .child(
                 // Main content row: the outline column (with its bottom
                 // backlinks dock) fills the remaining width; the sidebar,
                 // when open, sits to its right behind a drag handle.
@@ -4551,6 +4557,7 @@
                     )
                     .children(sidebar_handle)
                     .children(sidebar_panel),
+                    ),
             )
             .children(quick_open_overlay)
             .children(search_overlay)