Welcome to the Blazor feedback portal. We’re happy you’re here! If you have feedback on how to improve the Blazor, we’d love to hear it!>
Thanks for joining our community and helping improve Syncfusion products!
Description:
In initial rendering the modified class is added to the one dropdown. I have replicated the issue in the simple sample
Sample: Sample
Please find the customer sample in the attachment, here customer rendering spinner above the editform, now the modified and success class is added to the first dropdown

Replication Steps:
Expected Behavior: Modified and success class should not add to the component in initial rendering
Actual Behavior: these classes are added to the component in initial rendering