Bug 180130 Bar chart becomes a line in right-to-left mode
When setting a right-to-left mode, such as in arabic locale, all bar charts will become a line. After investigation, size field in DataPointHints is 0.
chart/org.eclipse.birt.chart.engine/src/org/eclipse/birt/chart/computation/withaxes/PlotWith2DAxes.java
return new Calendar[]{
						asDateTime( oMin ), asDateTime( oMax )
				};
			}
			catch ( ClassCastException ex )
			{
				throw new ChartException( ChartEnginePlugin.ID,
						ChartException.DATA_SET,
						"exception.numerical.data.datetime.axis",  
						Messages.getResourceBundle( rtc.getULocale( ) ) );
			}
		}
		else if ( ( iType & NUMERICAL ) == NUMERICAL )
		{
			try
			{
				return new double[]{
						asDouble( oMin ).doubleValue( ),
						asDouble( oMax ).doubleValue( )
				};
			}
			catch ( ClassCastException ex )
			{
				throw new ChartException( ChartEnginePlugin.ID,
						ChartException.DATA_SET,
						"exception.datetime.data.numerical.axis",  
						Messages.getResourceBundle( rtc.getULocale( ) ) );
			}
		}
		return null;