Appears that patch is not helping.
Errors like below are still appearing in the log
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2017-08-11 12:22:35 UTC [2840]: [1-1] user=,db=,app=,client= FATAL: could not connect to the primary server: could not send data to server: Socket is not connected (0x00002749/10057)
could not send startup packet: Socket is not connected (0x00002749/10057)
2017-08-11 12:22:40 UTC [1964]: [1-1] user=,db=,app=,client= FATAL: could not connect to the primary server: could not send data to server: Socket is not connected (0x00002749/10057)
could not send startup packet: Socket is not connected (0x00002749/10057)
2017-08-11 12:22:45 UTC [248]: [1-1] user=,db=,app=,client= FATAL: could not connect to the primary server: could not send data to server: Socket is not connected (0x00002749/10057)
could not send startup packet: Socket is not connected (0x00002749/10057)
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