Toast do not show when EjsToast CssClass property is set but variable value is empty.
It may perhaps be a good idea as a warning or error that when value or invalid toast type is not assigned, an error must show because it causes confusion looking for an error.
<EjsToast @ref="ToastObj"
Title="@toastTitle"
Content="@toastContent"
TimeOut="3000"
CssClass="@toastCss">
<ToastPosition X="46%" Y="50%" />
</EjsToast
private sync Task MyMethod()
{
toastTitle = "The title";
toastContent = "Some content here.";
toastCss = ""; // this was accidentally placed with empty string.
StateHasChanged();
await Task.Delay(100);
this.ToastObj.Show();
}