title: How should fix emoji in wpf
body: <p>i use this library <a href="https://www.nuget.org/packages/Emoji.Wpf" rel="nofollow noreferrer">https://www.nuget.org/packages/Emoji.Wpf</a> for use emoji in my app.
  but i have some problem.</p>
  <pre><code>&lt;emoji:Picker x:Name=&quot;mypicker&quot; FontSize=&quot;40&quot; Cursor=&quot;None&quot;  SelectionChanged=&quot;mypicker_SelectionChanged&quot; Loaded=&quot;mypicker_Loaded&quot;   /&gt; 
  &lt;TextBox  x:Name=&quot;mytxt&quot;  /&gt;
  </code></pre>
  <p>in SelectionChanged :</p>
  <pre><code>var emoji = mypicker.Selection;
  mytxt.Text = mytxt.Text + emoji ;
  </code></pre>
  <p>if i click on one emoji its work but if i click on that again its not working . how should i fix that?</p>