Hello,
I'm using the example from the synfusion documentation, but for some reason every time I click on the dropdown it will fetch the items from my controller but never show me the values.
I can see the answer in the browser console, but I can't see them in the dropdown.
it never open.

I'm using:
<link rel="stylesheet" rel='nofollow' href="https://cdn.syncfusion.com/ej2/20.2.43/fluent.css" />
<script src="https://cdn.syncfusion.com/ej2/dist/ej2.min.js"></script>
And this is the controller:
<div id='url-data' class='col-lg-6' style='padding-top:15px'>
<div class='content'>
<ejs-dropdownlist id="country" placeholder="Select a Country" query="@query">
<e-data-manager adaptor="UrlAdaptor" url="/Administration/GetGroups" crossDomain="true"></e-data-manager>
<e-dropdownlist-fields value="ProductName"></e-dropdownlist-fields>
</ejs-dropdownlist>
</div>
</div>
Thank you guys!