Why did the isolation of the radio button group not take effect after it was made into a component

A user asked on the AXURE forum why the isolation of radio button groups after being made into components does not take effect.

Source: https://axureboutique.com/blogs/axure-tutorials/a-user-asked-on-the-axure-forum-why-the-isolation-of-radio-button-groups-after-being-made-into-components-does-not-take-effect
More: https://axureboutique.com