When upgrading to 4.0.3 we experienced problems with the layout object removing both horizontal and vertical scrollbars from the browser. After trying a lot of things I decided to just use the sample from the documentation. On your site, this does not remove the scrollbars, but when I save the code locally (I also tried the professional version we own and the standard version) the scrollbars are not there
dhtmlx.com/docs/products/dhtmlxL … bject.html
If I include the sources (i.e. dhtmlxlayout.js,dhtmlxcommon.js,dhtmlxcontainer.js) the scrollbars appear. It only causes a problem with including dhtmlx.js