GeoServer图例显示矩形而非格鲁吉亚语文字问题求助

我在使用GeoServer生成WMS图层，来自格鲁吉亚（国家，非美国州），需要显示本国语言文字。我们使用UTF-8字符，但WMS图例中的文字显示为矩形，此前的GeoServer版本可正常显示。我已在所有可设置的地方配置了UTF-8编码，仍无法解决问题，恳请帮助。

我的SLD代码 #

<?xml version="1.0" encoding="UTF-8"?>
<StyledLayerDescriptor version="1.0.0" 
    xsi:schemaLocation="http://www.opengis.net/sld StyledLayerDescriptor.xsd" 
    xmlns="http://www.opengis.net/sld" 
    xmlns:ogc="http://www.opengis.net/ogc" 
    xmlns:xlink="http://www.w3.org/1999/xlink" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <NamedLayer>
    <Name>უძრავი ძეგლები</Name>
    <UserStyle>
      <Title>uZravi Zeglebi</Title>
      <FeatureTypeStyle>
        <Rule>
          <Name>კულტურული მემკვიდრეობის ობიექტი</Name>
          <ogc:Filter>
            <ogc:PropertyIsLike wildCard="%" singleChar="#" escape="!">
              <ogc:PropertyName>status</ogc:PropertyName>
              <ogc:Literal>კულტურული მემკვიდრეობის ობიექტი%</ogc:Literal>
            </ogc:PropertyIsLike>
          </ogc:Filter>
          <PolygonSymbolizer>
         <Fill>
           <CssParameter name="fill">#ff6e6e</CssParameter>
         </Fill>
       </PolygonSymbolizer>
        </Rule>
      </FeatureTypeStyle>
      <FeatureTypeStyle>
        <Rule>
        <Name>kulturuli memkvidreobis dzegli</Name>
          <ogc:Filter>
            <ogc:PropertyIsLike wildCard="%" singleChar="#" escape="!">
              <ogc:PropertyName>status</ogc:PropertyName>
              <ogc:Literal>კულტურული მემკვიდრეობის ძეგლი%</ogc:Literal>
            </ogc:PropertyIsLike>
          </ogc:Filter>
          <PolygonSymbolizer>
         <Fill>
           <CssParameter name="fill">#8d1818</CssParameter>
         </Fill>
       </PolygonSymbolizer>
        </Rule>
      </FeatureTypeStyle>
      <FeatureTypeStyle>
        <Rule>
        <Name>obieqti statusis gareshe</Name>
          <ogc:Filter>
            <ogc:PropertyIsLike wildCard="%" singleChar="#" escape="!">
              <ogc:PropertyName>status</ogc:PropertyName>
              <ogc:Literal>ობიექტი სტატუსის გარეშე%</ogc:Literal>
            </ogc:PropertyIsLike>
          </ogc:Filter>
          <PolygonSymbolizer>
         <Fill>
           <CssParameter name="fill">#58ceeb</CssParameter>
         </Fill>
       </PolygonSymbolizer>
        </Rule>
      </FeatureTypeStyle>
    </UserStyle>
  </NamedLayer>
</StyledLayerDescriptor>

图例显示效果 #

内容的提问来源于stack exchange，提问作者Irakli Ugulava