Sorry to say it's in OTC...specific to the 16:9 aspect ratio correction.
I've spent the last hour shuffling in/out files in the menu_1024_768.ini file to see if I can see which entry is messing up the mouse capture.....nothing yet. The issue is only with the 16:9 aspect ratio where it causes a "dead" mouse within the center of the screen:
If you right click out of the window, then bring it back again, the mouse will center within the view. It's this center where the "dead" zone is. By moving the mouse just a bit, the center wheel zoom feature will return.
Why does it do this, and only with the 16:9 aspect ratio......I DON"T KNOW!! There is nothing we can mod with the mouse. There are no files related to the mouse that we have access to. That's why I've been looking at the various other OTC files that
MAY have something to do with causing a dead spot on the screen. So far nothing!?!
My only suggestion is for you to move the mouse off center to regain the mouse capture feature, allowing the zoom to work.
OR, you can use the "TAB" key to zoom the views. Knowing its a bug should help in understanding the work around.
Sorry