The client program hung when the network connection to the server was interrupted. (Bug #40407)
The connection string option
Enable Auto-reconnectdid not work. When the connection failed, it could not be restored, and the errors generated were the same as if the option had not been selected. (Bug #37179)
It was not possible to use Connector/ODBC to connect to a server using SSL. The following error was generated:
Runtime error '-2147467259 (80004005)': [MySQL][ODBC 3.51 Driver]SSL connection error.