WebUI.authenticate url with http port not working

As mentioned in https://docs.katalon.com/display/KD/[WebUI]+Authenticate , when I try with a different http port it goes back to port 80.

E.g.
WebUI.authenticate(``'http://192.168.1.5:8080'``, ``'admin'``, ``'admin'``, ``12``)
Console (highlighted url port is missing)
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06-26-2018 03:35:34 AM - [START] - Start action : authenticate

06-26-2018 03:35:34 AM - [INFO] - Checking username

06-26-2018 03:35:34 AM - [INFO] - Checking password

1530009352502 addons.productaddons INFO sending request to: https://aus5.mozilla.org/update/3/GMP/60.0.2/20180605171542/WINNT\_x86-msvc-x86/en-US/release/Windows\_NT%206.1.1.0.7601%20(x86)/default/default/update.xml

06-26-2018 03:35:53 AM - [FAILED] - Unable to navigate to authenticated page (Root cause: org.openqa.selenium.WebDriverException: Reached error page: about:neterror?e=netTimeout&u=http%3A//admin%3Aadmin%40192.168.1.5/&c=UTF-8&f=regular&d=The%20server%20at%20192.168.1.5%20is%20taking%20too%20long%20to%20respond.

Build info: version: ‘3.7.1’, revision: ‘8a0099a’, time: ‘2017-11-06T21:07:36.161Z’

System info: host: ‘IEWIN7’, ip: ‘192.168.1.101’, os.name: ‘Windows 7’, os.arch: ‘x86’, os.version: ‘6.1’, java.version: ‘1.8.0_102’

Driver info: com.kms.katalon.core.webui.driver.firefox.CGeckoDriver

Capabilities {acceptInsecureCerts: true, browserName: firefox, browserVersion: 60.0.2, javascriptEnabled: true, moz:accessibilityChecks: false, moz:headless: false, moz:processID: 5308, moz:profile: C:\Users\IEUser\AppData\Loc…, moz:useNonSpecCompliantPointerOrigin: false, moz:webdriverClick: true, pageLoadStrategy: normal, platform: XP, platformName: XP, platformVersion: 6.1, proxy: Proxy(direct), rotatable: false, timeouts: {implicit: 0, pageLoad: 300000, script: 30000}}

Session ID: de84b22f-70fd-4d52-9b7d-cf84b7ccf28d)

06-26-2018 03:35:53 AM - [FAILED] - Test Cases/BasicAuthTest FAILED because (of) Unable to navigate to authenticated page (Root cause: org.openqa.selenium.WebDriverException: Reached error page: about:neterror?e=netTimeout&u=http%3A//admin%3Aadmin%40192.168.1.5/&c=UTF-8&f=regular&d=The%20server%20at%20192.168.1.5%20is%20taking%20too%20long%20to%20respond.

Build info: version: ‘3.7.1’, revision: ‘8a0099a’, time: ‘2017-11-06T21:07:36.161Z’

System info: host: ‘IEWIN7’, ip: ‘192.168.1.101’, os.name: ‘Windows 7’, os.arch: ‘x86’, os.version: ‘6.1’, java.version: ‘1.8.0_102’

Driver info: com.kms.katalon.core.webui.driver.firefox.CGeckoDriver

Capabilities {acceptInsecureCerts: true, browserName: firefox, browserVersion: 60.0.2, javascriptEnabled: true, moz:accessibilityChecks: false, moz:headless: false, moz:processID: 5308, moz:profile: C:\Users\IEUser\AppData\Loc…, moz:useNonSpecCompliantPointerOrigin: false, moz:webdriverClick: true, pageLoadStrategy: normal, platform: XP, platformName: XP, platformVersion: 6.1, proxy: Proxy(direct), rotatable: false, timeouts: {implicit: 0, pageLoad: 300000, script: 30000}}

Session ID: de84b22f-70fd-4d52-9b7d-cf84b7ccf28d)

06-26-2018 03:35:53 AM - [END] - End action : authenticate

06-26-2018 03:35:53 AM - [END] - End Test Case : Test Cases/BasicAuthTest

Hi, I have the same problem, have you resolved?
Best.