Disable scrolling behaviour in Windows 7 taskbar

Sometimes my mouse accidentally moves too low, and gets over the taskbar while I am trying to scroll, which results in the active window being replaced by the next one, i.e. the next window pops up and covers my focal one.

Note, that I'm not talking about scrolling among icons in a crowded taskbar that only show a fraction of windows (as can be seen in this image), neither about this issue, but about the fact that when I move my mouse wheel while being over the taskbar the next window will pop up without me clicking on its taskbar icon.

Is it possible to disable scrolling behaviour in the Windows 7 taskbar?

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