Android 11 Fairphone 3 default home launcher resets

[PeterKW]

Android 11 Fairphone 3 default home launcher resets /losses only Lawnchair fairly regularly. It resets to original Android stock launcher or the which launcher do you want to use menu. Not quite sure if the attached error message is linked but seems to appear alongside the default fault. Is there anything else I can try to get this working better?
Thank you very much

https://play.google.com/store/apps/details?id=ch.deletescape.lawnchair.plah

FATAL EXCEPTION: main
Process: ch.deletescape.lawnchair.plah, PID: 3880
java.lang.NullPointerException: Attempt to read from field 'int com.android.server.wm.Task.mTaskId' on a null object reference
	at android.os.Parcel.createExceptionOrNull(Parcel.java:2379)
	at android.os.Parcel.createException(Parcel.java:2357)
	at android.os.Parcel.readException(Parcel.java:2340)
	at android.os.Parcel.readException(Parcel.java:2282)
	at android.app.IActivityTaskManager$Stub$Proxy.startActivity(IActivityTaskManager.java:3696)
	at android.app.Instrumentation.execStartActivity(Instrumentation.java:1725)
	at android.app.Activity.startActivityForResult(Activity.java:5314)
	at com.android.launcher3.Launcher.startActivityForResult(Launcher.java:1)
	at android.app.Activity.startActivity(Activity.java:5654)
	at com.android.launcher3.BaseDraggingActivity.startActivitySafely(BaseDraggingActivity.java:15)
	at com.android.launcher3.Launcher.startActivitySafely(Launcher.java:1)
	at ch.deletescape.lawnchair.LawnchairLauncher.startActivitySafely(LawnchairLauncher.kt:1)
	at com.android.launcher3.touch.ItemClickHandler.startAppShortcutOrInfoActivity(ItemClickHandler.java:11)
	at com.android.launcher3.touch.ItemClickHandler.onClickAppShortcut(ItemClickHandler.java:13)
	at com.android.launcher3.touch.ItemClickHandler.onClick(ItemClickHandler.java:6)
	at com.android.launcher3.touch.-$$Lambda$oPqR0koj5OQZ6VtyqmfcFGp5X0Q.onClick(Unknown Source:0)
	at android.view.View.performClick(View.java:7448)
	at android.view.View.performClickInternal(View.java:7425)
	at android.view.View.access$3600(View.java:810)
	at android.view.View$PerformClick.run(View.java:28309)
	at android.os.Handler.handleCallback(Handler.java:938)
	at android.os.Handler.dispatchMessage(Handler.java:99)
	at android.os.Looper.loop(Looper.java:223)
	at android.app.ActivityThread.main(ActivityThread.java:7705)
	at java.lang.reflect.Method.invoke(Native Method)
	at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:592)
	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:952)
Caused by: android.os.RemoteException: Remote stack trace:
	at com.android.server.wm.ActivityRecord.addStartingWindow(ActivityRecord.java:1770)
	at com.android.server.wm.ActivityRecord.showStartingWindow(ActivityRecord.java:5866)
	at com.android.server.wm.ActivityStarter.recycleTask(ActivityStarter.java:1943)
	at com.android.server.wm.ActivityStarter.startActivityInner(ActivityStarter.java:1632)
	at com.android.server.wm.ActivityStarter.startActivityUnchecked(ActivityStarter.java:1526)