Hi Ken,
We have
validated your reported issue in the ASP.NET core Sidebar demo, and able to see
the issue. We have prepared a simple default sample of the Sidebar component
for your reference and attached the documentation link.
Sample: https://www.syncfusion.com/downloads/support/directtrac/general/ze/Core_Sidebar1603502261.zip
Documentation: https://ej2.syncfusion.com/aspnetcore/documentation/sidebar/getting-started
However, we
have considered refreshing our online demo to resolve the issue, which will be
refreshed in any of our upcoming releases. Please check the attached sample and
the documentation link for your reference.
Please
let us know if you need any further assistance.
Regards,
Sivakumar S