fix tray cannot be destroyed

Relates #https://github.com/electron/electron/issues/17622

main.js

@@ -766,6 +766,10 @@ app.on('before-quit', () => {
     shouldQuit: windowState.shouldQuit(),
   });
 
+  if (tray) {
+    tray.destroy();
+  }
+
   windowState.markShouldQuit();
 });
 
@@ -876,16 +880,15 @@ ipc.on('password-window-login', async (event, passPhrase) => {
 ipc.on('start-in-tray-on-start', async (event, newValue) => {
   try {
     userConfig.set('startInTray', newValue);
-
     if (newValue) {
       if (!tray) {
         tray = createTrayIcon(getMainWindow, locale.messages);
       }
     } else {
-      if (tray) {
+      // destroy is not working for a lot of desktop env. So for simplicity, we don't destroy it here but just
-        tray.destroy();
+      // show a toast to explain to the user that he needs to restart
-      }
+      // tray.destroy();
-      tray = null;
+      // tray = null;
     }
     event.sender.send('start-in-tray-on-start-response', null);
   } catch (e) {

preload.js

@@ -114,7 +114,7 @@ window.setPassword = (passPhrase, oldPhrase) =>
 
 window.setStartInTray = startInTray =>
   new Promise((resolve, reject) => {
-    ipc.once('start-in-tray-on-start-response', (event, error) => {
+    ipc.once('start-in-tray-on-start-response', (_event, error) => {
       if (error) {
         return reject(error);
       }

ts/components/session/settings/SessionSettings.tsx

@@ -22,6 +22,7 @@ import { toggleAudioAutoplay } from '../../../state/ducks/userConfig';
 import { sessionPassword } from '../../../state/ducks/modalDialog';
 import { PasswordAction } from '../../dialog/SessionPasswordDialog';
 import { SessionIconButton, SessionIconSize, SessionIconType } from '../icon';
+import { ToastUtils } from '../../../session/utils';
 
 export enum SessionSettingCategory {
   Appearance = 'appearance',
@@ -377,10 +378,18 @@ class SettingsViewInner extends React.Component<SettingsViewProps, State> {
         type: SessionSettingType.Toggle,
         category: SessionSettingCategory.Appearance,
         setFn: async () => {
-          const newValue = !(await window.getStartInTray());
+          try {
-          await window.setStartInTray(newValue);
+            const newValue = !(await window.getStartInTray());
-          // make sure to write it here too, as this is the value used on the UI to mark the toggle as true/false
+
-          window.setSettingValue('start-in-tray-setting', newValue);
+            // make sure to write it here too, as this is the value used on the UI to mark the toggle as true/false
+            window.setSettingValue('start-in-tray-setting', newValue);
+            await window.setStartInTray(newValue);
+            if (!newValue) {
+              ToastUtils.pushRestartNeeded();
+            }
+          } catch (e) {
+            window.log.warn('start in tray change error:', e);
+          }
         },
         content: undefined,
         comparisonValue: undefined,