Ensure mainWindow stays responsive after opening debug logs in fullscreen on MacOS

app/main.ts

@@ -1375,13 +1375,28 @@ async function openArtCreator() {
 let debugLogWindow: BrowserWindow | undefined;
 async function showDebugLogWindow() {
   if (debugLogWindow) {
-    debugLogWindow.show();
+    doShowDebugLogWindow();
     return;
   }
 
+  function doShowDebugLogWindow() {
+    if (debugLogWindow) {
+      // Electron has [a macOS bug][0] that causes parent windows to become unresponsive
+      //   if it's fullscreen and opens a fullscreen child window. Until that's fixed, we
+      //   only set the parent on MacOS is if the mainWindow is not fullscreen
+      // [0]: https://github.com/electron/electron/issues/32374
+      if (OS.isMacOS() && mainWindow?.isFullScreen()) {
+        debugLogWindow.setParentWindow(null);
+      } else {
+        debugLogWindow.setParentWindow(mainWindow ?? null);
+      }
+      debugLogWindow.show();
+    }
+  }
+
   const titleBarOverlay = await getTitleBarOverlay();
 
-  const options = {
+  const options: Electron.BrowserWindowConstructorOptions = {
     width: 700,
     height: 500,
     resizable: false,
@@ -1398,14 +1413,8 @@ async function showDebugLogWindow() {
       sandbox: true,
       contextIsolation: true,
       preload: join(__dirname, '../bundles/debuglog/preload.js'),
-      nativeWindowOpen: true,
     },
     parent: mainWindow,
-    // Electron has [a macOS bug][0] that causes parent windows to become unresponsive if
-    //   it's fullscreen and opens a fullscreen child window. Until that's fixed, we
-    //   prevent the child window from being fullscreenable, which sidesteps the problem.
-    // [0]: https://github.com/electron/electron/issues/32374
-    fullscreenable: !OS.isMacOS(),
   };
 
   debugLogWindow = new BrowserWindow(options);
@@ -1418,7 +1427,7 @@ async function showDebugLogWindow() {
 
   debugLogWindow.once('ready-to-show', () => {
     if (debugLogWindow) {
-      debugLogWindow.show();
+      doShowDebugLogWindow();
 
       // Electron sometimes puts the window in a strange spot until it's shown.
       debugLogWindow.center();