Hi Clement,
Thanks for using Syncfusion products.
We have ensured your reported scenario with attached
sample. We request you to refer the below script reference in your application
in _Host.cshtml page to overcome reported problem. We have attached the
modified sample for your reference. Please check with the below snippet and
screenshot.
<head>
<link rel='nofollow' href="_content/Syncfusion.Blazor/styles/bootstrap5.css" rel="stylesheet" />
<script src="_content/Syncfusion.Blazor/scripts/syncfusion-blazor.min.js" type="text/javascript"></script>
</head>
|

Sample : https://www.syncfusion.com/downloads/support/directtrac/general/ze/GraphBlazor-306815161.zip
UG : https://blazor.syncfusion.com/documentation/chart/getting-started
Kindly revert us if you have any other concerns.
Regards,
Durga Gopalakrishnan.