await FilePicker.PickAsync crashes Android app

[Ghostbird]

I've got this situation:

• Page with button
• Button command binding
• Command runs:

  try
  {
    if (await FilePicker.PickAsync() is FileResult file)
    {
      var fileContents = await File.ReadAllTextAsync(file.FullPath);
    }
  }
  catch (Exception ex)
  {
    ; // Used to set breakpoint here.
  }

Now if I make a minimal example of this, it seems to do fine all the time. However in my real app, whenever I run this, very often after picking the file, I get:

Exception has occurred: System.ObjectDisposedException
Cannot access a closed file

With this stacktrace:

System.ThrowHelper.ThrowObjectDisposedException_FileClosed (System.ThrowHelper.ThrowObjectDisposedException_FileClosed:-1)
System.IO.FileStream.ValidateReadWriteArgs (System.IO.FileStream.ValidateReadWriteArgs:-1)
System.IO.FileStream.Read (System.IO.FileStream.Read:-1)
Android.Runtime.InputStreamAdapter.Read (Mono.Android/Android.Runtime/InputStreamAdapter.cs:38)
Java.IO.InputStream.n_Read_arrayBII (Mono.Android/obj/Release/net8.0/android-34/mcw/Java.IO.InputStream.cs:229)
Android.Runtime.JNINativeWrapper.Wrap_JniMarshal_PPLII_I (Mono.Android/Android.Runtime/JNINativeWrapper.g.cs:275)

Note that the exception seems to occur on a thread that seems unrelated to my code, and I have found no way of catching it. It's always a fatal error that crashes the app. Sometimes, I manage to hit a breakpoint beyond the file picker in the debugger, but then debugging almost immediately gets interrupted by the crash.

Does anyone have a clue what I'm doing wrong?

[Ghostbird]

I think I've got it. It's in a blurb on the documentation page, that I've read dozens of times, and yet I only spot this right after posting.

The FullPath property doesn't always return the physical path to the file. To get the file, use the OpenReadAsync method.

[Ghostbird]

Ah, never mind. When using OpenReadAsync I get the same error.