Can you provide a test sample where you can reproduce this?

I tried with the following code and xaml and it shows the string value of the enum:

<Grid

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">

<TextBlock Text="{Binding State}" HorizontalAlignment="Center" VerticalAlignment="Center"/>

</Grid>

public enum EnumState

{

First,

Second,

Third

}

public class EnumViewModel

{

public EnumState State { get; set; }

}
public class EnumDisplayBehavior : MonoBehaviour

{

void Start()

{

NoesisView view = GetComponent<NoesisView>();

view.Content.DataContext = new EnumViewModel { State = EnumState.Second };

}

}

It does seem to work with TextBlocks. The problem appears in other controls:

<Grid>
    <StackPanel>
        <Button Content="{Binding State}"/>
        <ContentControl Content="{Binding State}"/>
        <TextBlock Text="{Binding State}"/>
        <TextBox Text="{Binding State,Mode=OneTime}"/>
    </StackPanel>
</Grid>

In WPF this results in:
Second
Second
Second
Second

In Noesis this results in:
1
1
Second
[no value displayed]

Thanks for the repro steps.