Just a guess but I would say that’s due to the blog widget you‘re using, possibly a combination of that and the slider widget.
You should contact QooQee and run it past them.
Its on pages without the news also. I have contacted QooQee, twice and not had a response. Their support is appalling!
Are you using any themed layout for your design? If yes, which layout are you using?
We will have to see if that is something presetted or can we change it.
I fixed it!!!!!
I worked out the double scroll bars were on pages with a certain master, I zoomed out on the master and found two pesky little random boxes on the pate board area. Deleted them and hey presto!