webdriverio: afterTest hook does not execute for tests that fail with timeOut errors

Environment (please complete the following information):

• WebdriverIO version: 6.1.20
• Mode: WDIO Testrunner
• If WDIO Testrunner, running sync/async: sync
• Node.js version: 12.18.1
• NPM version: 6.14.5
• Browser name and version: Chrome 83
• Platform name and version: Ubuntu 18.04.4
• Additional wdio packages used (if applicable): @wdio/spec reporter, @wdio/devtools-service, @wdio/mocha-framework,

Config of WebdriverIO

const debug = process.env.DEBUG
const defaultTimeout = 60000
const defaultCapabilities = [{ maxInstances: 5, browserName: 'chrome' }]
var slack = require('wdio-slack-service')
const video = require('wdio-video-reporter');
let tests = 0;

exports.config = {
    runner: 'local',
    specs: [
        './test/specs/**/*.js'
    ],
    maxInstances: debug ? 1 : 10,
    capabilities: debug ? [{ browserName: 'chrome' }] : defaultCapabilities,
    execArgv: debug ? ['--inspect'] : [],
    logLevel: 'trace',
    logLevels: {
        webdriver: 'info',
        '@wdio/applitools-service': 'silent',
        '@wdio/devtools-service': 'silent'
    },
    bail: 5,
    baseUrl: process.env.baseUrl,
    waitforTimeout: 60000,
    connectionRetryTimeout: 120000,
    connectionRetryCount: 3,
    specFileRetriesDeferred: false,
    services: ['chromedriver', 'devtools'],
    framework: 'mocha',
    reporters: [
        'spec', 
        ['allure', {
            outputDir: 'allure-results',
            disableWebdriverStepsReporting: true,
            disableWebdriverScreenshotsReporting: false,
        }]
    ],
    mochaOpts: {
        ui: 'bdd',
        timeout: debug ? (24 * 60 * 60 * 1000) : defaultTimeout
    },
    beforeTest: function (test, context) {
        browser.maximizeWindow()
    },
    afterTest: function(test, context, { error, result, duration, passed, retries }) {
        if (!passed) {
            browser.takeScreenshot();
        }
        tests++;
        console.log('----------------------------------------------')
        console.log(`No of tests: ${tests}`)
        console.log(`error is:\n${error}`)
    }
}

Describe the bug When any test fails with a timeOut error, code inside afterTest does not execute after that test. The hook does execute for tests that pass or fail with assertion errors.

To Reproduce

1. Implement some code inside afterTest hook

tests++;
console.log('----------------------------------------------')
console.log(`No of tests: ${tests}`)

1. Fail a test with timeOut error

Expected behavior The code inside afterTest hook should be executed after the test fails with timeOut error

Log https://gist.github.com/Harshad3009/fb0e465211ea5f48de92a483a157b315#file-logs-text