When you work with Interactive Reporting charts, you see multiple rectangular regions. By default, there is one global rectangular region, called size object. Typically, the graphic object (which contains the chart) and other objects (such as the objects holding the chart legend and the chart labels) fit inside the size object.
When you manipulate the sizes of objects, you may affect the rendering of the chart in HTML format and cause elements to be clipped. To avoid clipping elements rendered in HTML-rendered charts, ensure that all chart elements fit inside the global object. (You can see the rectangular outlines of the objects by clicking various parts of the chart.)