Behaviour of punctuation marks in phrase queries

[Doris Peter]

Hello, 

We use Solr 7.6.0 to build our index, and I have got a Question about
Phrase Queries:

We use the following configuration in schema.xml: 
   
    <!-- Text Standard -->
    <fieldType name="text" class="solr.TextField"
positionIncrementGap="1000" sortMissingLast="true"
autoGeneratePhraseQueries="true">
      <analyzer type="index">
        <tokenizer class="solr.WhitespaceTokenizerFactory"/>
        <charFilter class="solr.MappingCharFilterFactory"
mapping="mapping-FoldToASCII.txt"/>
        <filter class="solr.CJKBigramFilterFactory"/>
        <filter class="solr.WordDelimiterGraphFilterFactory"
protected="protectedword.txt"
             preserveOriginal="0" splitOnNumerics="1"
splitOnCaseChange="0"
             catenateWords="1" catenateNumbers="1" catenateAll="1"
             generateWordParts="1" generateNumberParts="1"
stemEnglishPossessive="1"
             types="wdfftypes.txt" />
        <filter class="solr.LengthFilterFactory" min="1"
max="2147483647"/>
        <filter class="solr.LowerCaseFilterFactory"/>
      </analyzer>
      <analyzer type="query">
        <tokenizer class="solr.WhitespaceTokenizerFactory"/>
        <charFilter class="solr.MappingCharFilterFactory"
mapping="mapping-FoldToASCII.txt"/>
        <filter class="solr.CJKBigramFilterFactory"/>
        <filter class="solr.WordDelimiterGraphFilterFactory"
protected="protectedword.txt"
             preserveOriginal="0" splitOnNumerics="1"
splitOnCaseChange="0"
             catenateWords="1" catenateNumbers="1" catenateAll="1"
             generateWordParts="1" generateNumberParts="1"
stemEnglishPossessive="1"
             types="wdfftypes.txt" />
        <filter class="solr.LengthFilterFactory" min="1"
max="2147483647"/>
        <filter class="solr.LowerCaseFilterFactory"/>
      </analyzer>
    </fieldType>


    If we search for a phrase like "Moosburg a.d. Isar" we don't get a
match, though it's definitely in our Index.
    If we search for "Moosburg a. d. Isar" with a blank between "a."
and "d." we get a match.

    This also happens for other non-word characters, like ' or , for
example.

    The strange thing about it is, that the Solr Analysis-Tool reports
a match for the first version, but when we send a Solr Query, we get no
result Documents.

    Has anyone got an idea, what this could be?

    Thank you very much in advance,

    Doris Peter