Far as I can tell from trying to replicate it, the width your Chrome window is at just the right width to screw with the table that sets out those buttons, so that the ad drops down when your mouse is near that button. Any wider and it wouldn't happen:Okay, fair enough.
I now have another issue and it seems pointless opening another thread. I'm on another pc today - win 7 using chrome. I went to mark L1 as read but when I hovered my mouse over "mark forums read" I got a betting pop-up.
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I'm really not trying to cause trouble, this is a PITA.