Truffle test: error when passing more than one file as input

I have several test files, which I can successfully execute via truffle test (having started a ganache-cli process).

For example:

• ganache-cli
• truffle test test/test1.js
• truffle test test/test2.js

However, when I try to input both files at once, for example:

• ganache-cli
• truffle test test/test1.js test/test2.js

Truffle completes the first one successfully, but throws an error for the second one:

Contract: Test2 "before all" hook: prepare suite:
Uncaught Error: Error: LevelUpArrayAdapter named 'blockLogs' index out of range: index 6; length: 6
at C:UsersbarakAppDataRoamingnpmnode_modulesganache-clibuildcli.node.js:85357:23
at C:UsersbarakAppDataRoamingnpmnode_modulesganache-clibuildcli.node.js:85331:5
at C:UsersbarakAppDataRoamingnpmnode_modulesganache-clibuildcli.node.js:85777:12
at C:UsersbarakAppDataRoamingnpmnode_modulesganache-clibuildcli.node.js:85542:19
at C:UsersbarakAppDataRoamingnpmnode_modulesganache-clibuildcli.node.js:87681:7
at _combinedTickCallback (internal/process/next_tick.js:131:7)
at process._tickCallback (internal/process/next_tick.js:180:9)
...

Here is my truffle-config.js file:

// See <http://truffleframework.com/docs/advanced/configuration>
module.exports = {
    contracts_build_directory: "./build/contracts",
    networks: {
        development: {
            host: "127.0.0.1",
            port: 8545,
            network_id: "*", // Match any network id
            gas: 4712388, // Gas limit used for deploys
            gasPrice: 100000000000, // Gas price used for deploys
        },
    },
    solc: {
        optimizer: {
            enabled: true,
            runs: 5000000,
        },
    },
};

Does anybody have any idea what I am missing here?

I found this related thread on GitHub, which gives the following explanation:

You throw an error that is unhandled.
Read the error message.
"Uncaught Error" means that something @#$% up and there was no one to clean up.
The program has no choice but to exit.

But it doesn’t quite explain why everything works correctly when I truffle test one file at a time.

Thank you!!!