diff --git a/apps/desktop/src/window/DesktopApplicationMenu.test.ts b/apps/desktop/src/window/DesktopApplicationMenu.test.ts
index fa3960a34ee5..a07a24a66c21 100644
--- a/apps/desktop/src/window/DesktopApplicationMenu.test.ts
+++ b/apps/desktop/src/window/DesktopApplicationMenu.test.ts
@@ -247,13 +247,13 @@ describe("DesktopApplicationMenu", () => {
     }),
   );
 
-  it.effect("routes View menu zoom to the main window instead of zoom roles", () =>
+  it.effect("registers macOS command-plus once and routes it through main-window zoom", () =>
     Effect.gen(function* () {
       const selectedAction = yield* Deferred.make<string>();
       const applicationMenuTemplate =
         yield* Deferred.make<readonly Electron.MenuItemConstructorOptions[]>();
 
-      yield* configureMenu(selectedAction, applicationMenuTemplate);
+      yield* configureMenu(selectedAction, applicationMenuTemplate, { platform: "darwin" });
 
       const template = yield* Deferred.await(applicationMenuTemplate);
       const viewMenu = template.find((item) => item.label === "View");
@@ -268,9 +268,17 @@ describe("DesktopApplicationMenu", () => {
         ),
       );
 
-      const zoomIn = viewMenu.submenu.find((item) => item.label === "Zoom In");
+      const shiftedEqual = viewMenu.submenu.filter(
+        (item) => item.accelerator === "CmdOrCtrl+Shift+=",
+      );
+      assert.lengthOf(shiftedEqual, 1);
+      assert.lengthOf(
+        viewMenu.submenu.filter((item) => item.accelerator === "CmdOrCtrl+numadd"),
+        1,
+      );
+      const zoomIn = shiftedEqual[0];
       assert.isDefined(zoomIn);
-      assert.equal(zoomIn.accelerator, "CmdOrCtrl+=");
+      assert.isFalse(zoomIn.visible);
       if (typeof zoomIn.click !== "function") {
         throw new Error("Expected Zoom In menu item to have a click handler.");
       }
diff --git a/apps/desktop/src/window/DesktopApplicationMenu.ts b/apps/desktop/src/window/DesktopApplicationMenu.ts
index c51e13e58673..aeaca8350709 100644
--- a/apps/desktop/src/window/DesktopApplicationMenu.ts
+++ b/apps/desktop/src/window/DesktopApplicationMenu.ts
@@ -263,6 +263,16 @@ export const make = Effect.gen(function* () {
             visible: false,
             click: zoomClick("in"),
           },
+          ...(environment.platform === "darwin"
+            ? [
+                {
+                  label: "Zoom In",
+                  accelerator: "CmdOrCtrl+Shift+=",
+                  visible: false,
+                  click: zoomClick("in"),
+                },
+              ]
+            : []),
           { label: "Zoom Out", accelerator: "CmdOrCtrl+-", click: zoomClick("out") },
           // The numeric keypad sends its own key codes, so the number-row
           // accelerators above never match it.
diff --git a/apps/desktop/src/window/DesktopWindow.test.ts b/apps/desktop/src/window/DesktopWindow.test.ts
index ab59f63e1ad7..56206a227963 100644
--- a/apps/desktop/src/window/DesktopWindow.test.ts
+++ b/apps/desktop/src/window/DesktopWindow.test.ts
@@ -774,9 +774,10 @@ describe("DesktopWindow", () => {
   // Chromium hands the main window's zoom level down to embedded preview
   // guests, so every app zoom has to put the preview browser back at its own
   // zoom or zooming the UI drags the previewed page with it.
-  it.effect("restores the preview browser's own zoom after zooming the app", () =>
+  it.effect("zooms main with a focused popup and reapplies preview zoom", () =>
     Effect.gen(function* () {
       const fakeWindow = makeFakeBrowserWindow();
+      const popup = makeFakeBrowserWindow();
       const createCount = yield* Ref.make(0);
       const mainWindow = yield* Ref.make<Option.Option<Electron.BrowserWindow>>(Option.none());
       const previewZoomReapplies: number[] = [];
@@ -785,6 +786,7 @@ describe("DesktopWindow", () => {
         createCount,
         mainWindow,
         previewZoomReapplies,
+        focusedWindow: popup.window,
       });
 
       yield* Effect.gen(function* () {
@@ -801,6 +803,7 @@ describe("DesktopWindow", () => {
           [-0.5, -1, -0.5, 0],
         );
         assert.deepEqual(previewZoomReapplies, [-0.5, -1, -0.5, 0]);
+        assert.equal(popup.setZoomLevel.mock.calls.length, 0);
       }).pipe(Effect.provide(layer));
     }),
   );
diff --git a/apps/desktop/src/window/DesktopWindow.ts b/apps/desktop/src/window/DesktopWindow.ts
index 3926cda14ece..5d14fdfdc53f 100644
--- a/apps/desktop/src/window/DesktopWindow.ts
+++ b/apps/desktop/src/window/DesktopWindow.ts
@@ -1026,7 +1026,7 @@ export const make = Effect.gen(function* () {
     }),
     zoomMain: Effect.fn("desktop.window.zoomMain")(function* (direction) {
       yield* Effect.annotateCurrentSpan({ direction });
-      const window = yield* focusedMainWindow;
+      const window = yield* electronWindow.main;
       if (Option.isNone(window) || window.value.isDestroyed()) {
         return;
       }