WebPlus X6: I've done something silly...lost scrollbar

I don't know what I did, but on one of the pages in a site I'm developing I've lost the vertical right-hand scroll bar that usually sits next to the studio tabs. It's showing up on the other pages, just not one particular page, and also the page/background isn't there - just the elements placed on the page. I have a feeling the page background is lower, but I have no scrollbar to get there! I've tried zooming out etc.

Screenshot attached.

Thanks!

Attached Files

noscrollbar.pdf (189.2 KB)