Entry.Focused/Unfocused not working on Android XF 1.4.4.6387?

Hi have a quite simple code for capturing the Focused/Unfocused events on an entry (This entry is added as content of the page)

var txtForFocus = new Entry { Text = "Hello" };
txtForFocus.Focused += (object sender, FocusEventArgs e) => {
        this.Title = "Focused";
};
txtForFocus.Unfocused += (object sender, FocusEventArgs e) => {
        this.Title = "Unfocused";
};

but on Android these events are never Triggered. I does work on iOS but not on Android.
Does anyone have this problem? Is this a known issue?
Cheers