A bug has been introduced recently where the calendar icon for DatePicker does not display
I can duplicate this bug using your REPL
https://demos.telerik.com/aspnet-core/datepicker
From here I add after line 9
.HtmlAttributes(new { @style = "width: 150px;"})
As you can see this results in no calendar to pick the date
If you make it even wider some of the icon becomes visible
.HtmlAttributes(new { @style = "width: 200px;"})
And at 250 it is fully visible
.HtmlAttributes(new { @style = "width: 250px;"})
We do this across our app using an extension method and it was previously working.
{
builder.ToComponent().HtmlAttributes.Merge("style", "width:" + width.ToString() + "px");
return builder;
}