so i did it again....you went to look at the page and i had changed it! im sorry for that. I thought you had seen the behavior i was talking about
I figured out something...not much but something....and perhaps its a css issue
so in safari after the scroll has disappeared (i hope you can recreate the behaviour i was talking about above) all that it takes to make the scrollbar reappear is a resizing of the browser window.....poof the scrollbar is back.....
my uneducated guess is something needs a specified dimension to prevent the disappearing. I tried fiddling with this but got no progress. but that is all i can think of for now.
Trust me this time when you view the page it will be as intended....i will not mess with it