Poco 1.14.2 hangs in sendBytes on LockT(_mutex)

[matteosan1]

Hello,
we are using Poco library to send Fix8 messages since version 1.7.8. Recently we upgraded to 1.14.2 and it broke our code since any communication after the login (with SSL certificate) with the remote server hangs on the sendBytes call (NetSSL_OpenSSL::SecureSocketImpl) , sepcifically at the LockT(_mutex) line.

Do you have any ideas why this is happening ? Are we missing something in the configuration of the Socket ?

Regards.