xamarin forms snackbar custom view not working as expected (setting control values, unwanted action button, view not disapearing)

Question

I am getting various unexpected behaviors when trying to implement a snackbar with a custom view in Xamarin forms.

This is the function I am calling (from a dependency service):

    public void MySnackBar(string argument, string title, string message, string action_text, string action, MySnackBarPosition position)
    {
                    Activity activity = Xamarin.Essentials.Platform.CurrentActivity; //.Current.Activity;
        Android.Views.View view = activity.FindViewById(Android.Resource.Id.Content);
        var snack_view = activity.LayoutInflater.Inflate(Droid.Resource.Layout.my_snackbar, (ViewGroup)view);

        FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(
            FrameLayout.LayoutParams.WrapContent,
            FrameLayout.LayoutParams.WrapContent
        );

        snack_view.LayoutParameters = lp;

        var snack_label = snack_view.FindViewById<TextView>(Droid.Resource.Id.my_snack_text);
        snack_label.Text = "You're doing something wrong";
        snack_label.Tag = $"{argument}:{action}";
        snack_label.Click += OnSnackClick;

        var snack = Snackbar.Make(activity, snack_view, "", Snackbar.LengthLong);            
        snack.Show();

    }

    private void OnSnackClick(object sender, EventArgs args)
    {
        var v = (View)sender;

        var tag = v.Tag;
        var data = tag.ToString().Split(':');
        //var argument = data[0];
        //var action = data[1];

        MyApp.App.Instance.HandleSnackbarAction("","");

    }

Layout file:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="250dp"
android:layout_gravity="end"
android:orientation="horizontal"
android:layout_height="wrap_content"
android:padding="20dp"
android:background="@android:color/transparent">

<TextView
    android:id = "@+id/my_snack_text"
    android:elevation="8px"
    android:background="#fff"
    android:layout_marginEnd="20dip"
    android:layout_marginTop="20dip"
    android:padding = "20dip"
    android:gravity="center"
    android:text="hello hsdkfhdskjh dsfhsdjkh fjsdkfh sdjkhf dskj hfjkdshfjkdshfjkdsh"
    android:layout_width="0dp"
    android:layout_weight="1"
    android:layout_height="wrap_content"/>

</LinearLayout>

When I call this code for a first time the TextView displays with the correct text, but there are two big issues:

1. An empty button appears in the top left of the screen, presumably a snackbar action button
2. The TextView doesn't disappear when the snackbar times out
3. The v.Tag inside the OnSnackClick is null

If I call the code a second time, the same issues persist but on this occasion the TextView's text isn't even set and only the default text from the xml file is displayed.

First Call:

Subsequent Calls: