ZeroMQ buggy releases
Testing Tango 9.3.5 and 9.3.6 with recent 0MQ releases shows that 0MQ 4.3.3 and 4.3.4 injected a bug in tango events:
API_EventTimeout: Event channel is not responding anymore, maybe the server or event system is down ... API_MissedEvents: Missed some events! Zmq queue has reached HWM?
There's a fix in 0MQ, which will be released with 4.3.5. https://github.com/zeromq/libzmq/commit/6cc694d8c20d63379cbc9404c30ee24f8a0525f4
Thanks to @gscalamera and @alessioigorbogani for all the testing.