can't trigger connectLost method

I met a complex trouble that client can't trigger connectLost method

i use 2.1.0 client version and apollo broker

option set autoreconnect is true,QOS =0

after a few days, on the broker ,the client can't receive message but the apollo server shows the
client has Producers and Consumers with topic, into the Consumers fields and found the IP for it,

but the IP has not in the broker connects queue

when i check the client pc, the client of pc not trigger the connectLost method

but when i renew the network card on the pc, immediately connectLost method

who met the same problem and help me or fix the problem

i am crzay!!

Please fill out the form below before submitting, thank you!

- [x] Bug exists Release Version 1.2.0 ( Master Branch)
- [x] Bug exists in Snapshot Version 1.2.1-SNAPSHOT (Develop Branch)
- [x] Bug exists in MQTTv5 Version (mqttv5-new Branch)

If this is a bug regarding the Android Service, please raise the bug here instead: https://github.com/eclipse/paho.mqtt.android/issues/new