add: this.line.geometry.components[index].clearBounds(); 
context:     modifyFeature: function() {        var index = this.line.geometry.components.length - 2;        this.line.geometry.components[index].x = this.point.geometry.x;        this.line.geometry.components[index].y = this.point.geometry.y;    },
meta: 1027	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/1027/82c64254e51e58de4128b1e074e88142db1007e5/Polygon.js/buggy/lib/OpenLayers/Handler/Polygon.js