InteractionRequest CustomPopupWindow不会调整

Question

使用棱镜Interactionrequest和CustomPopUpWindow我遇到问题，自定义弹出窗口没有调整大小。

第一次调用交互时，它会正确地调整内容的大小，但如果我再次调用它，则会记住此大小，并且不会根据更改的内容更改大小。

这是一个已知问题，还是我做错了？

此致 赖

 <i:Interaction.Triggers>
    <InteractionRequest:InteractionRequestTrigger SourceObject="{Binding ImportConfirmation, Mode=OneWay}">
        <InteractionRequest:PopupWindowAction IsModal="True" CenterOverAssociatedObject="True">
            <InteractionRequest:PopupWindowAction.WindowContent>
                <Views:ImportMachineDefintionConfirmationView/>
            </InteractionRequest:PopupWindowAction.WindowContent>
        </InteractionRequest:PopupWindowAction>
    </InteractionRequest:InteractionRequestTrigger>
    <InteractionRequest:InteractionRequestTrigger SourceObject="{Binding DeleteMachineDefinitionConfirmation, Mode=OneWay}">
        <InteractionRequest:PopupWindowAction IsModal="True" CenterOverAssociatedObject="True" >
            <InteractionRequest:PopupWindowAction.WindowContent>
                <Views:DeleteMachineDefinitionConfirmationView/>
            </InteractionRequest:PopupWindowAction.WindowContent>
        </InteractionRequest:PopupWindowAction>
    </InteractionRequest:InteractionRequestTrigger>
</i:Interaction.Triggers>

private void DeleteMachineDefinitionCommandExecute(IVersionAwareMachineDefinition machineDefinition)
    {
        var deleteConfirmation =
            this.unityContainer.Resolve<IDeleteMachineDefinitionConfirmationViewModel>(
                new ParameterOverride("machineDefinitionToDelete", machineDefinition));            
        this.DeleteMachineDefinitionConfirmation.Raise(
            deleteConfirmation,
            _ =>
                {
                    if (!_.Confirmed)
                    {
                        return;
                    }

                    this.repository.DeleteMachineDefinition((MachineType)machineDefinition.MachineTypeId, machineDefinition.MachineNumber);
                    this.MachineDefinitions =
                        new ObservableCollection<IVersionAwareMachineDefinition>(this.repository.GetKnownVersionAwareMachineDefinitions());
                    this.SelectedMachineDefinition = null;
                });
    }