The expected behavior is that the close tab icon should only appear when the user hovers over the tab, similar to how tabs behave in native macOS apps like Finder, TextEdit, Safari, and other third-party applications. This hover-based visibility of the close icon is also the default behavior when using the Compact or Vertical tab layouts in Orion. This design choice enhances the user experience by keeping the interface clean while still providing quick access to close tabs when needed.