Sweep: Picker Attribute "SelectedIndex" Not being respected on page load on Android? (✓ Sandbox Passed)

src/Controls/src/Core/Picker/Picker.cs

@@ -232,8 +232,10 @@ string GetDisplayMember(object item)
 
 		static object CoerceSelectedIndex(BindableObject bindable, object value)
 		{
-			var picker = (Picker)bindable;
-			return picker.Items == null ? -1 : ((int)value).Clamp(-1, picker.Items.Count - 1);
+		    var picker = (Picker)bindable;
+		    if (picker.Items == null || !picker.Items.Any())
+		        return value; // Do not coerce if Items are not set yet
+		    return ((int)value).Clamp(-1, picker.Items.Count - 1);
 		}
 
 		void OnItemDisplayBindingChanged(BindingBase oldValue, BindingBase newValue)

src/Controls/src/Xaml/XamlNode.cs

@@ -172,6 +172,21 @@ public ElementNode(XmlType type, string namespaceURI, IXmlNamespaceResolver name
 		public NameScopeRef NameScopeRef { get; set; }
 
 		public override void Accept(IXamlNodeVisitor visitor, INode parentNode)
+		Dictionary<XmlName, object> deferredProperties = new Dictionary<XmlName, object>();
+
+		public void DeferProperty(XmlName propertyName, object value)
+		{
+			deferredProperties[propertyName] = value;
+		}
+
+		public void ApplyDeferredProperties()
+		{
+			foreach (var kvp in deferredProperties)
+			{
+				Properties[kvp.Key] = (INode)kvp.Value;
+			}
+			deferredProperties.Clear();
+		}
 		{
 			if (visitor.VisitingMode == TreeVisitingMode.TopDown && !SkipVisitNode(visitor, parentNode))
 				visitor.Visit(this, parentNode);
@@ -210,6 +225,19 @@ public override INode Clone()
 		{
 			var clone = new ElementNode(XmlType, NamespaceURI, NamespaceResolver, LineNumber, LinePosition)
 			{
+			if (!SkipChildren(visitor, this, parentNode))
+			{
+				// Check if ItemsSource or Items is being set and apply deferred SelectedIndex if any
+				if (Properties.ContainsKey(XmlName.xItemsSource) || Properties.ContainsKey(XmlName.xItems))
+				{
+					ApplyDeferredProperties();
+				}
+
+				foreach (var node in Properties.Values.ToArray())
+					node.Accept(visitor, this);
+				foreach (var node in CollectionItems.ToArray())
+					node.Accept(visitor, this);
+			}
 				IgnorablePrefixes = IgnorablePrefixes
 			};
 			foreach (var kvp in Properties)