Buttons "Home" and "Go Up" are not disabled when used from non-Sections tab

Toolbar buttons "Up" (Goes one section/category up) and "Home" (goes to home section/category) can be used to quickly navigate through catalog (in "Structure & Data" section).

When administrator have reached Home category, then both toolbar buttons became disabled.

Recently I've noticed that buttons become disabled only, when "Sections" tab is selected. So when they are disabled go to "Links" tab and into some deep section/category. The buttons are still disabled.