Hi Itk53. Yes that's your problem. Most attributes should be put in the Mouse Off layer. You should only be placing the page background shape in the Page Background layer and the browser pasteboard shape/image in the Pasteboard layer.

To find out which layers a certain attribute is on either select the All Layers Visible/All Layers Editable. You can now select all assets on the page in the Selector Tool by holding down the Alt key and drilling down through each shape. OR look at the Status bar bottom left of the window and Xara informs you of what layer that asset is on.