When @bind-Value is used, the tags are ordered in the way the user chose them, which is the expected behavior.

When you don't use two-way binding, but alter the Value in the ValueChanged event (to implement some logic), the tags get reordered according to the their occurrence in the data source.

I would expect that they remain the user order in all cases.

Based on my testing and the online demos, each selection of an item in the dropdown for the Blazor MultiSelect closes the dropdown.

Is there a way to keep the dropdown open for the user to make multiple selections? The user could then click outside of the dropdown to close the dropdown.

The behavior I am describing is similar to the Kendo UI for jQuery MultiSelect "autoClose" configuration property.

https://docs.telerik.com/kendo-ui/api/javascript/ui/multiselect/configuration/autoclose