fix: getNormalBounds() for transparent windows on Windows (#38218)

shell/browser/native_window_views.cc

@@ -787,6 +787,10 @@ gfx::Size NativeWindowViews::GetContentSize() {
 }
 
 gfx::Rect NativeWindowViews::GetNormalBounds() {
+#if BUILDFLAG(IS_WIN)
+  if (IsMaximized() && transparent())
+    return restore_bounds_;
+#endif
   return widget()->GetRestoredBounds();
 }
 

spec/api-browser-window-spec.ts

@@ -1720,6 +1720,23 @@ describe('BrowserWindow module', () => {
           expect(w.isFullScreen()).to.equal(true);
         });
 
+        it('checks normal bounds for maximized transparent window', async () => {
+          w.destroy();
+          w = new BrowserWindow({
+            transparent: true,
+            show: false
+          });
+          w.show();
+
+          const bounds = w.getNormalBounds();
+
+          const maximize = once(w, 'maximize');
+          w.maximize();
+          await maximize;
+
+          expectBoundsEqual(w.getNormalBounds(), bounds);
+        });
+
         it('does not change size for a frameless window with min size', async () => {
           w.destroy();
           w = new BrowserWindow({