Structure values being overwritten during execution

Question

I have structure defined below:

[StructLayout(LayoutKind.Explicit, Size = 10)]
public struct AudioSampleInfo
{
    [FieldOffset(0)]
    public ushort AudioBitPerSample;

    [FieldOffset(2)]
    public ushort AudioNumChannels;

    [FieldOffset(4)]
    public ushort AudioType;

    [FieldOffset(6)]
    public uint AudioSampleRate;
}

However, during execution the values seem to change. It seems as if the assigned byte array in memory seem to be overlapping.

During program execution when we set the values as:

AudioSampleInfo audioInfo = new AudioSampleInfo();
audioInfo.AudioBitPerSample = 16;
audioInfo.AudioNumChannels = 1;

After setting the AudioNumChannels, value of AudioBitsPerSample changes to 272.

I can't seem to find any issues as to why this would be occur .

Any suggestions would be helpful ?