daemon stops processing blocks 1 before a superblock
Summary
MNs and SNs "hanging" one block before a superblock. They are responsive to crown-cli rpc requests, and actually keep talking to the network but they stop accepting new blocks.
Steps to reproduce
Just run a RC3 MN/SN/wallet.
Expected behavior
daemon should keep running normally.
Problematic behavior
daemon stops accepting new blocks one block before a superblock.
Crown-core environment info
Ubuntu 16.04
Crown-core application info
v0.12.5.2 RC3
Relevant logs, dumps and/or screenshots
Added 2 bzip2 compressed tar archives at https://nextcloud.crown.tech/nextcloud/s/znd8HiiAsRX3C6B
20181026_walkjivefly_neb08_MN_hang
20181026_walkjivefly_neb10_SN_hangEach contains a core dump, debug.log and short README.
/cc @artem
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