Multiselect Autocomplete with ReadData displays selected values in dropdown

[LagunaRyan]

I'm currently trying to use the ReadData feature of autocomplete, and I'm having an issue where selected values are not being removed from the data list. Am I doing something wrong?

<Autocomplete @ref="DropdownRef"
              TItem="string"
              TValue="string"
              Data="AvailableData"
              ReadData="OnReadData"
              TextField="@((item) => item)"
              ValueField="@((item) => item)"
              @bind-SelectedValues="@DataValues"
              Placeholder="Multi-select"
              SelectionMode="AutocompleteSelectionMode.Multiple"
              SuggestSelectedItems="false"
              CloseOnSelection="false"
              MinLength="0">
    <NotFoundContent> Sorry... @context was not found! :( </NotFoundContent>
</Autocomplete>