Click works despite error Object is present but is not visible in viewport

[Ryan_Manns]

I have a test case that scrolls to a link at the bottom of the page and clicks it. The click action fails with the following error:

click(findTestObject('a_link')) FAILED. Reason: com.kms.katalon.core.exception.StepFailedException: Object 'Object Repository/a_link' is present but is not visible in viewport

However, it actually does click the link and redirects to the expected page. Therefore I would not expect the above failure message. The error message is misleading and requires that I use the CONTINUE_ON_FAILURE or OPTIONAL behavior. Here are the sequence of steps used to scroll and click the link:

WebUI.scrollToElement(findTestObject('a_link'), GlobalVariable.timeout)
WebUI.verifyElementInViewport(findTestObject('a_link'), GlobalVariable.timeout)
WebUI.waitForElementClickable(findTestObject('a_link'), GlobalVariable.timeout)
WebUI.click(findTestObject('a_link'))

The workaround is to use the OPTIONAL behavior for the Click step:

WebUI.click(findTestObject('a_link'), FailureHandling.OPTIONAL)

Katalon Version 5.10.1

[Xing_Chen]

I have the same issue. And something interesting is,
One click “OK” button in a message box works with the error. And after I appended some more actions afterwards, it did not send error any more
and another “click” action at the bottom did hit the same error again…

BTW, from my eyeball checking, the button is in my “ViewPoint”. So I assume it should not show the exception.