Do you have your mouse set up for left-handed use. This will also cause this problem.

So is someone coming up with a fix?  I used RocketDock for a while with XP.  My main problems with it were that it had fewer widgets (but organized the download site better than WinCustomize) and was VERY sensitive to drags.  Other than that, I consider them to be very similar.

You can display only what you want in the galleries.  In the gallery of your choice, click on the All Categories dropdown arrow and select the one you want.  Then you get only what you need.  Take a look below:

Intellipoint does appear to be a workaround, but not without problems.  It doesn't reverse the buttons at the driver level.  As a result, until my desktop is mostly loaded, I have a right-handed mouse in my left hand.  It can be troublesome knowing which button to use in the meantime.  Same problem happens during shutdown.  If there is a dialog that pops up like a program won't respond, I might get the wrong button.

I did figure out how to use the WinCustomize filters.  Thanks to messiah1.  However, I did end up installing RocketDock anway.  I now have 2 docks for free.