Answering one shutdown popup closes them all

server-console/src/main.js

@@ -105,19 +105,23 @@ const ipcMain = electron.ipcMain;
 var isShuttingDown = false;
 function shutdown() {
     if (!isShuttingDown) {
-        var idx = 0;
-
         // if the home server is running, show a prompt before quit to ask if the user is sure
         if (homeServer.state == ProcessGroupStates.STARTED) {
-            idx = dialog.showMessageBox({
+            dialog.showMessageBox({
                 type: 'question',
                 buttons: ['Yes', 'No'],
                 title: 'Are you sure?',
                 message: 'Quitting will stop your Server Console and your Home domain will no longer be running.'
-            });
+            }, shutdownCallback);
+        } else {
+            shutdownCallback(0);
         }
 
-        if (idx == 0) {
+    }
+}
+
+function shutdownCallback(idx) {
+    if (idx == 0 && !isShuttingDown) {
         isShuttingDown = true;
 
         userConfig.save(configPath);
@@ -147,7 +151,6 @@ function shutdown() {
         }
     }
 }
-}
 
 function deleteOldFiles(directoryPath, maxAgeInSeconds, filenameRegex) {
     console.log("Deleting old log files in " + directoryPath);