I'm sorry, is this really the case? :<
I'm having the same issue with widgets getting pushed down when I have the browser in a smaller window. I'm worried this would affect those who have lower resolution screens: http://prntscr.com/656z74
As you can see, I have the ads visible in there. but my right column widgets are down: http://prntscr.com/6570bt
I usually browse with adblockers enabled, but I turned them off for my website to troubleshoot this issue. However neither in Firefox or Google Chrome I could get to display those ads.
I asked a friend to try it for me though, and it shows that EVEN with the ads, they're pushing down my widgets : http://imgur.com/fdpsgYb - http://imgur.com/Q5k1mkh
I think the simplest solution for this would be to relocate that ad to show on the bottom of my website, is that possible?
I'm not against ads displays generally, it's just a matter of proper design and location as to not affect the users experience while they're shown.