CloseEventArgs Reason text is not transferred correctly

I implement the server and the client with WebSocketSharp v1.0.4.0

In the server i use this code to close a connection:

Sessions.CloseSession(ID, CloseStatusCode.ProtocolError, "Request is missing the Target");

In the client, i have this code:

    private void WsOnOnError(object sender, ErrorEventArgs errorEventArgs)
    {
        Console.WriteLine($"WsOnOnError {errorEventArgs.Message} {errorEventArgs.Exception}");
    }

    private void WsOnOnClose(object sender, CloseEventArgs closeEventArgs)
    {
        Console.WriteLine($"WsOnOnClose {closeEventArgs.Reason} {closeEventArgs.Code} {closeEventArgs.WasClean}");
    }

My output is:

WsOnOnClose h♥?♦_§?QS§?∟S§?↑T☺?♣R♥?%[¶?¶N 1002 True

The reason is showing corrupted text.

Reproduce the issue using Sessions.CloseSession with CloseStatusCode.ProtocolError and the client WsOnOnClose handler shown in the report. Trace how the close reason travels from the server to CloseEventArgs.Reason, and verify that the exact text "Request is missing the Target" is received instead of corrupted characters. Done means the reported reason is preserved while the close code remains 1002.