Thank you for your post.
I have tried a number of different things, and I have discovered that this is a problem with a Macintosh when using the Scripts menu. If I place a button on the screen in the current layout, it does scroll. If I either choose the script from the Scripts menu or have a button on another layout, it fails.
I could not duplicate the problem on a Windows machine.
I have reported this inconsistency to our Development and Software Quality Assurance (Testing) departments so they can get a better understanding of the issue.
In the mean time, a workaround would be to create separate layouts for each help menu item. I know this is way less than ideal, but I can't think of a better solution. Anyone else?