My Xamarin.Android app can't be started anymore via intent - xamarin

Question

A few months ago my app was working fine when it gets started by an intent from another app.
Now when my app gets started via intent I get the error:
03-21 12:00:43.096 Google Pixel 3 XL Info 1234 ActivityManager Showing crash dialog for package com.comp.myapp u0
03-21 12:00:43.085 Google Pixel 3 XL Error 5860 AndroidRuntime --- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.AsyncMethodBuilderCore+<>c.<ThrowAsync>b__6_0 (System.Object state) [0x00000] in <c282b05120ba4b698b1a1e9d68af4131>:0
at Android.App.SyncContext+<>c__DisplayClass2_0.<Post>b__0 () [0x00000] in <e2a51596e3434d12a5bd106b9a0f0644>:0
at Java.Lang.Thread+RunnableImplementor.Run () [0x00008] in <e2a51596e3434d12a5bd106b9a0f0644>:0
at Java.Lang.IRunnableInvoker.n_Run (System.IntPtr jnienv, System.IntPtr native__this) [0x00009] in <e2a51596e3434d12a5bd106b9a0f0644>:0
at (wrapper dynamic-method) System.Object.6(intptr,intptr)
at mono.java.lang.RunnableImplementor.n_run(Native Method)
at mono.java.lang.RunnableImplementor.run(RunnableImplementor.java:30)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6718)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Force finishing activity com.comp.myapp/md5ac266b5641403f314bbc23831457c9e5.MainActivity
This crash seems to happen before my app runs the OnCreate() method as I don't find what I log via Log.Debug() in LogCat.
My app works without problems, when I start it directly. In that state it also has no problems taking intents from other apps and processing them appropriately.

Answer 1

It turned out that my OnCreate method wasn't started because it was:
async public override void OnCreate(Bundle savedInstanceState, PersistableBundle persistentState)
{
instead of
async protected override void OnCreate(Bundle savedInstanceState)
{