WebDynamicScrollBarsView appears as an accessible element even when WebFrameView does not allow scrolling. In this case, the scroll bars view should be ignored
Created attachment 24800 [details] patch to make scroll bars not appear when not allowed
Comment on attachment 24800 [details] patch to make scroll bars not appear when not allowed r=me This is arguably working around a bug in NSScrollView. I suggest you also request this same change in AppKit.
app kit is planning on adding methods to handle this.
http://trac.webkit.org/changeset/38035