I cannot get results from api eth_getLogs sometimes

Software Versions

OS : Linux
JVM : Oracle Corporation 1.8.0_161 amd64
Git : a8ad2a169e58946b5b8de6ecf7b7ef5b8db05aff
Version : 4.7.5
Code : 18306

Expected behavior

If the JSON-RPC service is enabled, users should be able to search for events based on contract addresses and topics. However, after I enabled the service, there should be an address-related log in a certain block, but I couldn't find it.

Actual behavior

I use the following interface to get events:

curl --location 'http://localhost:8545/jsonrpc' --header 'Content-Type:application/json' --data '{
    "jsonrpc": "2.0",
    "method": "eth_getLogs",
    "params": [
        {
            "address":[
                "0x034e5a6bbf5d4bacd1c92c4a9bd2a67554c755a5"
            ],
            "fromBlock": "0x30f22c0",
            "toBlock":"0x30f22c0"
        }
    ],
    "id": 1
}'

And get nothing:

{"jsonrpc":"2.0","id":1,"result":[]}

But the following log really exists in block 51323584("0x30f22c0"):

        {
            "address": "0x034e5a6bbf5d4bacd1c92c4a9bd2a67554c755a5",
            "blockHash": "0x00000000030f22c0a2db59c5b94ca345ef97ff3ec3eef3cd45863907cabd04f8",
            "blockNumber": "0x30f22c0",
            "data": "0x0000000000000000000000006e0617948fe030a7e4970f8389d4ad295f249b7e0000000000000000000000000000000000000000000000000000000000000000",
            "logIndex": "0x44",
            "removed": false,
            "topics": [
                "0xcdee897399ab5e465acb1bd3ed5e32c695f196321764546c59720fa6c9ce4c69"
            ],
            "transactionHash": "0xb2c4a682fdfe6352b93ef79fa7b890ac5daf7f6a240f52e2b528c5f1c817a96f",
            "transactionIndex": "0xe5"
        },

I used the same interface with the JSON parameter and dropped the ‘address’ to verify it:

curl --location 'http://localhost:8545/jsonrpc' --header 'Content-Type:application/json' --data '{
    "jsonrpc": "2.0",
    "method": "eth_getLogs",
    "params": [
        {
            "fromBlock": "0x30f22c0",
            "toBlock":"0x30f22c0"
        }
    ],
    "id": 1
}'

I tried to use another address 0xa614f803b6fd780986a42c78ec9c7f77e6ded13c and got the log successfully.

Frequency

I have no idea. But I have not gotten logs using the address 0x034e5a6bbf5d4bacd1c92c4a9bd2a67554c755a5 in other blocks yet.