StackoverflowException when connecting using private key

SSH.NET version 2016.0.0 (release as well as debug mode)
Remote SSH Server version: Serv-U MFTP FTP 15.1.4.6 (using username/password and private key)
Remote Operating System distribution name and architecture (x32/x64): x64
What kind of access do you have?: Local machine
Does Putty/WinSCP work?: Yep, SSH.NET also works most (ie 99,9%) of the time
Operating System (for Windows, run winver.exe): Windows 2012 R2 build 9600
.NET Framework versions installed (See C:\WINDOWS\Microsoft.Net\Framework): .NET 4.6
What is your target framework and architecture (x32/x64)?: x64
Is your project multi-threaded/complex?: No, I can replicate using single thread

We have created a console application, that periodically monitors a local SFTP server for new files. Sometimes, the process hangs and a StackOverflow exception is logged, crashing the process.

We are using a Dispose-pattern, where each new poll gets a new instance of Sftp, connects and calls Sftp.ListDirectory("/dirname"); after polling files, the connection is disconnected and disposed, using a using-statement in our program.

As this is a StackOverflow exception, I cannot pinpoint the exact point, where the program crashes, however I have attached trace from System.Diagnostics, that hopefully can provide some insight.
SSHtrace.txt

BTW: Thank you for a fantastic SSH/SFTP-library, I'm very impressed with the feature set as well as the performance!

Inizia con il file allegato SSHtrace.txt e il punto di ingresso del polling intorno a Sftp.ListDirectory("/dirname"), quindi esamina il flusso ripetuto di connect, disconnect e Dispose descritto nel report. Il lavoro è completato quando la causa della StackOverflowException intermittente è stata identificata e lo scenario di polling ripetuto non causa più arresti anomali.