I applied a SLD style to color a road network in Geoserver (see the picture, before the styling, all lines are in the same color). Before the styling, I can query the WMS layer with arbitrary width and height values. But after the styling, I cannot get the right picture if I increase width to certain number.
For example, consider the following query to WMS
Before applying the color style, I can set the width value to any number;
After applying the color style, I can only set width no larger than 410. I do not understand why the styling matters.