<p>Changing the Makefile for the TLS module to use OpenSSL 1.0 fixes the problem, that at least provides us with a workaround.</p>
<p>Just to be sure, I've repeated the process of making the TLS module using OpenSSL 1.1.1b and the problem returns, if I then clean and make the TLS module using OpenSSL 1.0.2r the problem is fixed.</p>
<p>Thank you to all for your assistance.</p>

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