MFiles.VAF.Extensions.ConfigurableVaultApplicationBase not restoring bool = false in confguration

When using public class VaultApplication:MFiles.VAF.Extensions.ConfigurableVaultApplicationBase<Configuration> it seems to not be restoring false bool values from the json configuraiton file but for some reason the "Yes" value is saved and restored. Also, it works perfectly with public class VaultApplication:ConfigurableVaultApplicationBase<Configuration>.

Craig Hawker, am I missing something when using MFiles.VAF.Extensions.ConfigurableVaultApplicationBase?

Saved this using :MFiles.VAF.Extensions.ConfigurableVaultApplicationBase :

Restarted vault and refreshed everything and now get this:

Source code:

VaultApplication.cs

using MFiles.VAF;
using MFiles.VAF.AppTasks;
using MFiles.VAF.Common;
using MFiles.VAF.Configuration;
using MFiles.VAF.Core;
using MFilesAPI;
using System;
using System.Diagnostics;

namespace BoolNotSavingInConfig
{
/// <summary>
/// The entry point for this Vault Application Framework application.
/// </summary>
/// <remarks>Examples and further information available on the developer portal: http://developer.m-files.com/. </remarks>
public class VaultApplication
//: ConfigurableVaultApplicationBase<Configuration>
: MFiles.VAF.Extensions.ConfigurableVaultApplicationBase<Configuration>
{
}
}

Configuration.cs

using MFiles.VAF.Configuration;
using MFiles.VAF.Configuration.JsonAdaptor;
using System;
using System.Collections.Generic;
using System.Runtime.Serialization;

namespace BoolNotSavingInConfig
{
[DataContract]
public class Configuration
{
[DataMember]
public bool bool1 { get; set; }

[DataMember]
public bool bool2 { get; set; }
}
}

Using MFiles.VAF.Extensions 23.1.49

Any ideas as to what is going on?