wheel event should not change active tab

Start a Qt app that has a QTabBar
Mouse over the QTabBar
using your mouse wheel (or ball) will now cause the QTabBar to change the active tab.

This is very disconcerting and non-standard behavior. For example, I'm develping a multi-tabbed app. If the user is trying to scroll the content in a particular view, and accidentially places the mouse over the tab bar, suddenly they zip away from the intended view. More likely, they click on the tab bar handle to switch views, then immediately try to scroll the content with the mouse wheel, only to have it disappear. At the very least this is not the native behavior on Mac, but I suggest this weird behavior be turned off for all Qt platforms.