old file did not deleted in FasterLog

FileDeletedWithFasterLog.cs

using FASTER.core;
// all old files are deleted after truncating in same session
{
    using var device = Devices.CreateLogDevice("test.log", recoverDevice: true);
    using var log = new FasterLog(new FasterLogSettings()
    {
        LogDevice = device,
        SegmentSizeBits = 20,
        MemorySizeBits = 15,
        PageSizeBits = 10,
    });
    Console.WriteLine($"{log.BeginAddress}, {log.TailAddress}");
    var data = new byte[512];
    // inserting data
    for (int i = 0; i < 10000; i++)
    {
        log.Enqueue(data);
    }
    log.Commit(true);
    log.TruncateUntil(log.TailAddress);
    log.Commit(true);
}

FileNotDeletedFasterLog.cs

// expected: after running this, There is only last log segment.
// actual: after running this, old file is not deleted.
using FASTER.core;
{
    using var device = Devices.CreateLogDevice("test.log", recoverDevice: true);
    using var log = new FasterLog(new FasterLogSettings()
    {
        LogDevice = device,
        SegmentSizeBits = 20,
        MemorySizeBits = 15,
        PageSizeBits = 10,
    });
    Console.WriteLine($"{log.BeginAddress}, {log.TailAddress}");
    var data = new byte[512];
    // inserting data
    for (int i = 0; i < 10000; i++)
    {
        log.Enqueue(data);
    }
    log.Commit(true);
}
{
    using var device = Devices.CreateLogDevice("test.log", recoverDevice: true);
    using var log = new FasterLog(new FasterLogSettings()
    {
        LogDevice = device,
        SegmentSizeBits = 20,
        MemorySizeBits = 15,
        PageSizeBits = 10,
    });
    Console.WriteLine($"{log.BeginAddress}, {log.TailAddress}");
    log.TruncateUntil(log.TailAddress);
    log.Commit(true);
}

This is fixed in microsoft/FASTER#627