Do you mean “Plus icon and Add to existing test case” as this?
I agree it would be a bug.
But I am afraid Katalon team would not read your post above, so they would not notice it. Katalon team once wrote that they are not committed to read this “User forum”. See
as @Jass wrote:
the forum support is voluntary and pretty much relies on our community users to help each other. There is no a specific person in the Katalon team to be accountable for providing support on Forum. As a KSE and KRE user, you can support a Zendesk ticket for better support as we have dedicated people there.
Do you have a paid license of KSE or KRE? If so you should submit a request for support at