How can I prevent Text suggestions in an Entry in Xamarin Forms?

Question

Is it possible to disable text suggestions for a Xamarin.Forms entry? I expected that this is done by IsTextPredictionEnabled = false, but this value seems to have no affect on the Entry, at least as of Xamarin Forms 5.0.0.2291.

I have created a test screen with the following code:

var entry1 = new Entry();
entry1.Text = "Default";
entry1.WidthRequest = 300;
entry1.IsSpellCheckEnabled = true;
entry1.IsTextPredictionEnabled = true;
absoluteLayout.Children.Add(entry1);

var entry2 = new Entry();
entry2.IsSpellCheckEnabled = false;
entry2.IsTextPredictionEnabled = false;
entry2.Text = "No SpellCheck/Prediction";
entry2.WidthRequest = 300;
entry2.Margin = new Thickness (0, 60, 0, 0);
absoluteLayout.Children.Add(entry2);

This produces the following behavior. Notice that both entries behave the same regardless of the IsSpellCheckEnabled or IsTextPredictionEnabled values.

According to the documentation here, this should work: https://docs.microsoft.com/en-us/dotnet/api/xamarin.forms.entry.istextpredictionenabled?view=xamarin-forms

Also here: https://docs.microsoft.com/en-us/xamarin/xamarin-forms/user-interface/text/entry

Nothing came up in my searches to indicate that this is broken, so maybe I'm doing something wrong?