I'm using the following ogc options for my SLD for city point labels. It doesn't pass the validation test, but does apply the style defined in the SLD. But, after I apply the style, and try to make additional edits to the sld, the sld is changed, so each time I want to make edits I need to copy/paste from a saved version of the working SLD. Also, if I close my project and reopen, my style is no longer applied to the map and my sld is changed.
Is changed to: