点线重复删除添加，样式不更新

[FEJackFly]

maptalks's version and what browser you use?

Issue description

点线重复删除添加，样式不更新，最后一帧显示。希望添加一个实时更新的选项

Please provide a reproduction URL (on any jsfiddle like site)

{ "symbol": { "lineColor": "red", "markerFill": "red", "lineWidth": 1, "lineOpacity": 1, "markerType": "ellipse", "markerWidth": { "stops": [ [0, 10], [20, 10] ] }, "markerHeight": { "stops": [ [0, 10], [20, 10] ] }, "markerPlacement": "vertex", "markerVerticalAlignment": "middle", "markerRotationAlignment": "map", "markerPitchAlignment": "map" } }