nextKey is not returned when calling GetTxsEvent

[swmd]

It appears that the pagination does not work properly when calling QueryClient.queryUnverified().

Here's the pagination object I am passing into the function.

pagination: {
    countTotal: true,
    key: new Uint8Array(),
    offset: Long.fromNumber(0, true),
    limit: Long.fromNumber(5, true),
    reverse: false,
}

There are two issues I found in the response:

1. nextKey is always an empty array.
2. offset and limit keys don't work correctly. When I passed offset=4, limit=7, it just returned the result from the beginning. The response had the transactions of indexes 0-6.

Edit: To give you a bit more context on this issue, I am pasting the whole code snippet here.

import { Tendermint34Client } from "@cosmjs/tendermint-rpc"
import { QueryClient } from "@cosmjs/stargate"
import { GetTxsEventRequest } from "cosmjs-types/cosmos/tx/v1beta1/service"

const client = QueryClient.withExtensions(
    await Tendermint34Client.connect({rpc_endpoint}),
)

client.queryUnverified("/cosmos.tx.v1beta1.Service/GetTxsEvent", GetTxsEventRequest.encode({
    events: [
        "message.action='delegate'",
    "delegate.validator='{validator_address}'",
    ],
    pagination: {
    countTotal: true,
    key: new Uint8Array(),
    offset: Long.fromNumber(0, true),
    limit: Long.fromNumber(5, true),
    reverse: false,
    },
    orderBy: OrderBy.ORDER_BY_ASC,
}).finish())

[webmaster128]

This issue seems to be specific for that query. Which Cosmos SDK version are you using in your backend? What value do you get returned in total in the response?