Why restart filecoin container, the Filecoin.SyncState always show start from 0?

[lcgogo]

Describe the bug
I tried to restart filecoin container (openworklabs/lotus:v0.4.1) after full synced. The Filecoin.SyncState always show start from 0. And it is also disturbing the Filecoin.ChainHead does not show the local current height till full synced.

To Reproduce
Steps to reproduce the behavior:

1. Run 'VER=0.4.1
   docker run -d --restart always --name fil-test-${VER} -v /data/fil-test/:/root/.lotus -p 1234:1234 openworklabs/lotus:v${VER}'
   # wait full synced
2. docker stop -t 30 fil-test-0.4.1
3. docker start fil-test-0.4.1
4. curl --request POST --url http://localhost:1234/rpc/v0 --header 'content-type: application/json' --data '{ "jsonrpc": "2.0", "method": "Filecoin.SyncState", "params": [], "id": 3 }' | jq
   
5. curl --request POST --url http://localhost:1234/rpc/v0 --header 'content-type: application/json' --data '{ "jsonrpc": "2.0", "method": "Filecoin.ChainHead", "params": [], "id": 3 }' | jq
   

Expected behavior
A clear and concise description of what you expected to happen.

Screenshots
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Version (run lotus version):
0.4.1

Additional context
Add any other context about the problem here.

[lcgogo]

old issue