fix: Multiple problems with SSO

android/app/src/main/AndroidManifest.xml

@@ -38,7 +38,7 @@
     >
         <activity
             android:name=".MainActivity"
-            android:launchMode="singleInstance"
+            android:launchMode="singleTask"
             android:theme="@style/LaunchTheme"
             android:configChanges="orientation|keyboardHidden|keyboard|screenSize|smallestScreenSize|locale|layoutDirection|fontScale|screenLayout|density|uiMode"
             android:hardwareAccelerated="true"

lib/pages/chat_list/chat_list.dart

@@ -801,7 +801,13 @@ class ChatListController extends State<ChatList>
     await client.accountDataLoading;
     await client.userDeviceKeysLoading;
     if (client.prevBatch == null) {
-      await client.onSync.stream.first;
+      await client.onSyncStatus.stream
+          .firstWhere((status) => status.status == SyncStatus.finished);
+
+      if (!mounted) return;
+      setState(() {
+        waitForFirstSync = true;
+      });
 
       // Display first login bootstrap if enabled
       if (client.encryption?.keyManager.enabled == true) {

lib/pages/homeserver_picker/homeserver_picker.dart

@@ -166,8 +166,7 @@ class HomeserverPickerController extends State<HomeserverPicker> {
       isLoading = true;
     });
     try {
-      final client = await Matrix.of(context).getLoginClient();
-      client.login(
+      await client.login(
         LoginType.mLoginToken,
         token: token,
         initialDeviceDisplayName: PlatformInfos.clientName,