Invalid TX signature, but chain-id and account sequence are correct

At one point, my test chain with one validator crashed. When restarted, it wouldn’t accept any more transactions.

Here are my bash shortcuts just for reference:

function send() {
    launchpayloadcli tx send cosmos1duqsv0rgf6cg9uk4n3hmxmhr3kxa56au5qrj3y $1 1drop --memo "post-crash test tx" --keyring-backend test --home /home/shinichi/source/work/crashed-drop-c34/nodeconfig/faucet_account --node tcp://$NODE:26657 --chain-id drop-c34efbd55083665002d2 -o json
}

function checksend {
    curl http://$LCD:1317/txs/$1
}

function checkaccount {
	curl http://$LCD:1317/auth/accounts/$1
}

function checknode {
	curl http://$LCD:1317/node_info
}
shinichi@asuka:~ checkaccount cosmos1duqsv0rgf6cg9uk4n3hmxmhr3kxa56au5qrj3y
{"height":"8517","result":{"type":"cosmos-sdk/Account","value":{"address":"cosmos1duqsv0rgf6cg9uk4n3hmxmhr3kxa56au5qrj3y","coins":[{"denom":"drop","amount":"7999981594"},{"denom":"evtx","amount":"5977584791"}],"public_key":{"type":"tendermint/PubKeySecp256k1","value":"A/9O/UiMYLOn+w6fb/gOHwnUq+wpOFqaNiEy0aUhOFx4"},"account_number":"3","sequence":"119"}}}

shinichi@asuka:~ checknode
{"node_info":{"protocol_version":{"p2p":"7","block":"10","app":"0"},"id":"ac30facc07db730401cbcf599d9ba0d20da86ef0","listen_addr":"tcp://0.0.0.0:26656","network":"drop-c34efbd55083665002d2","version":"0.33.7","channels":"4020212223303800","moniker":"alice@apeunit.com node drop-c34efbd55083665002d2-0","other":{"tx_index":"on","rpc_address":"tcp://0.0.0.0:26657"}},"application_version":{"name":"","server_name":"\u003cappd\u003e","client_name":"\u003cappcli\u003e","version":"","commit":"","build_tags":"","go":"go version go1.15.5 linux/amd64"}}

And now when I make a transaction, the account sequence and chain-id are the same as you can see, but it still fails with signature verification.

shinichi@asuka:~ send cosmos13xaeejzdx8q0xevv9pqp790j707ytkgshr953u
{"chain_id":"drop-c34efbd55083665002d2","account_number":"3","sequence":"119","fee":{"amount":[],"gas":"200000"},"msgs":[{"type":"cosmos-sdk/MsgSend","value":{"from_address":"cosmos1duqsv0rgf6cg9uk4n3hmxmhr3kxa56au5qrj3y","to_address":"cosmos13xaeejzdx8q0xevv9pqp790j707ytkgshr953u","amount":[{"denom":"drop","amount":"1"}]}}],"memo":"post-crash test tx"}

confirm transaction before signing and broadcasting [y/N]: y
{"height":"0","txhash":"12D15B4999B7C9FB8DA96842EF7D0DD17AF691AE956700CA7F80B780706CA333","code":4,"raw_log":"unauthorized: signature verification failed; verify correct account sequence and chain-id"}

Any ideas why that might be the case?