Here is my XAML:
<richTextEditor:SfRichTextEditor
x:Name="editorEntryBody"
ToolbarPosition="Bottom"
ToolbarOptions="Bold,Italic,Underline,BulletList,NumberList"
AutoSize="TextChanges"
Padding="0,0,0,15"
HtmlText="{Binding HtmlBodyText}" />
Autosize is not working at all. Is this a known issue?