migration to solr 5.5.2 highlight on ngrams not working

[elisabeth benoit]

Hello

After migrating from solr 4.10.1 to solr 5.5.2, we dont have the same
behaviour with highlighting on edge ngrams fields.

We're using it for an autocomplete component. With Solr 4.10.1, if request
is sol, highlighting on solr is <em>sol<\em>r

with solr 5.5.2, we have <em>solr<\em>.

Same problem as described in
http://grokbase.com/t/lucene/solr-user/154m4jzv2f/solr-5-hit-highlight-with-ngram-edgengram-fields

but nobody answered the post.

Does anyone know we can fix this?

Best regards,
Elisabeth

Field definition

<fieldType name="autocomplete_ngram" class="solr.TextField">
  <analyzer type="index">
    <charFilter class="solr.MappingCharFilterFactory"
mapping="mapping-ISOLatin1Accent.txt"/>
    <!--<tokenizer class="solr.StandardTokenizerFactory"/>-->
<tokenizer class="solr.PatternTokenizerFactory" pattern="[\s,;:\-\&#39;]"/>
    <filter class="solr.WordDelimiterFilterFactory"
        splitOnNumerics="0"
        generateWordParts="1"
        generateNumberParts="1"
        catenateWords="0"
        catenateNumbers="0"
        catenateAll="0"
        splitOnCaseChange="1"
        preserveOriginal="1"
        types="wdfftypes.txt"
        />
    <filter class="solr.LowerCaseFilterFactory"/>
    <filter class="solr.EdgeNGramFilterFactory" maxGramSize="20"
minGramSize="1"/>
  </analyzer>
  <analyzer type="query">
    <charFilter class="solr.MappingCharFilterFactory"
mapping="mapping-ISOLatin1Accent.txt"/>
    <!--<tokenizer class="solr.StandardTokenizerFactory"/>-->
<tokenizer class="solr.PatternTokenizerFactory" pattern="[\s,;:\-\&#39;]"/>
    <filter class="solr.WordDelimiterFilterFactory"
        splitOnNumerics="0"
        generateWordParts="1"
        generateNumberParts="0"
        catenateWords="0"
        catenateNumbers="0"
        catenateAll="0"
        splitOnCaseChange="0"
        preserveOriginal="1"
        types="wdfftypes.txt"
        />
    <filter class="solr.LowerCaseFilterFactory"/>

  </analyzer>
</fieldType>