Geth 1.8.4 sync interruption

[yurij-volokhov]

Hi there,

System information

VM: 4 CPUs, 8GB RAM, 250GB SSD
Geth version: 1.8.4
OS & Version: Ubuntu 17.10

Expected behaviour

I tried to sync a new node with params:
geth --port 30603 --rpc --rpcapi personal,eth,web3,admin,net console

Actual behaviour

Synchronization and communication with the network as a whole was interrupted on average every hour without any messages. I defined this by the absence of new messages from geth and the value of eth.syncing did not change. I stopped the work of the node using exit in the console and saw a message likes that
ERROR[04-22|16:50:18] Failed to unregister sync peer peer=4b771b99ec882b02 err="peer is not registered"
then repeated repetition of this:
INFO [04-22|15:05:25] IPC closed err="accept unix /home/ethereum/.ethereum/geth.ipc: use of closed network connection"

[reductionista]

This is a duplicate of Issue #16539

[yurij-volokhov]

OK, but it's not clear for me.

I'd solved my problem rolling back to v1.8.3