Well - if you hit 'B' for the Media Browser Pane, then click on Synth, you will see a + and an X up at the top left of the Browser Pane.
Click on the + to add a synth to the synth rack, then expand presumably VST2, to get the big list of them.
I do not know if this would behave any differently for you, as the list looks to be in the same relative height as the list that you get when you hit the Insert tab and get the list through that method.
In any case, if I get to the bottom of the list of VST 2 synths and want to scroll back up, I just click ON the arrow at the top and hold it, and it will auto-scroll upward. I stop when I get a bit past the one I really want, then release the mouse and click exactly on the one I want to insert.
It has never caused me any trouble with minimizing anything, so i am not sure how it keeps happening on your screen.
Try the above and post back :)
Bob Bone