Legend shows without ticks/labels

[ernstdevreede]

With the config for SAT.xml, legends show up without labels and tick marks.
The unit shows up correctly though.

<?xml version="1.0" encoding="UTF-8" ?>
<Configuration>
  <!-- 
  See https://dev.knmi.nl/projects/adagucserver/wiki/Dataset, for details
  This file can be included by using the adaguc.dataset.cgi?service=wms&DATASET=testdata& key value pair in the URL 
  -->
  <!-- Styles -->
  <Legend name="gray" type="colorRange">
    <palette index="0"   red="0"   green="0"   blue="0"/>
    <palette index="240" red="255" green="255"   blue="255"/>
  </Legend>
  <Legend name="invgray" type="colorRange">
    <palette index="0" red="255" green="255"   blue="255"/>
    <palette index="240"   red="0"   green="0"   blue="0"/>
  </Legend>
  <Style name="gray">
    <Legend>gray</Legend>
    <Min>313.15</Min>
    <Max>193.15</Max>
    <RenderMethod>nearest,bilinear</RenderMethod>
  </Style>

 <Layer type="database">
    <Name>GOES16-C12</Name>
    <Title>goes16-c12</Title>
    <Variable>CMI</Variable>
    <FilePath filter="^OR_ABI-L2-CMIPF-M6C12_G16.*\.nc$">/data/adaguc-data/SAT</FilePath>
    <Dimension name="t">time</Dimension>
    <Styles>gray</Styles>
  </Layer>
</Configuration>