Solr creates whitespace in dismax query

[Johann Höchtl]

I have a fieldtype with the following definition:

    <fieldType name="text_kstem" class="solr.TextField" 
positionIncrementGap="100">
      <analyzer type="index">
        <tokenizer class="solr.WhitespaceTokenizerFactory"/>
        <filter class="solr.StopFilterFactory" ignoreCase="true" words="stopwords.txt" 
enablePositionIncrements="false" />
        <filter class="solr.WordDelimiterFilterFactory" generateWordParts="1" generateNumberParts="1" 
catenateWords="1" catenateNumbers="1" catenateAll="0" splitOnCaseChange="1"/>
        <filter class="solr.LowerCaseFilterFactory"/>
        <filter class="solr.SynonymFilterFactory" synonyms="openthesaurus.txt" 
ignoreCase="true" expand="true"/>
        <filter class="com.lucidimagination.solrworks.analysis.LucidKStemFilterFactory" 
protected="protwords.txt"/>
        <filter class="solr.RemoveDuplicatesTokenFilterFactory"/>
      </analyzer>
      <analyzer type="query">
        <tokenizer class="solr.WhitespaceTokenizerFactory"/>
        <filter class="solr.StopFilterFactory" ignoreCase="true" 
words="stopwords.txt"/>
        <filter class="solr.WordDelimiterFilterFactory" generateWordParts="1" generateNumberParts="1" 
catenateWords="0" catenateNumbers="0" catenateAll="0" splitOnCaseChange="1"/>
        <filter class="solr.LowerCaseFilterFactory"/>
        <filter class="com.lucidimagination.solrworks.analysis.LucidKStemFilterFactory" 
protected="protwords.txt"/>
      </analyzer>
    </fieldType>

I have a value "blume2000.de" in a field with the fieldtype above. If I issue a 
query with select?q=blume2000&qt=dismax (yes the provided field gets searched by dismax 
handler) and
the result is empty. Only if I enter the query select?q=blume+2000&qt=dismax I 
get the result I want.

So I used the debugQuery=true to find out what's wrong. The interesting thing 
is, that the rawquerystring is still correct, but the
parsedquery is:
+DisjunctionMaxQuery((name:"blume 2000" | teaser:"blume 2000")) 
DisjunctionMaxQuery((teaser:"blume 2000"~3 | name:"blume 2000"~3))

Now I gotta ask, where does the whitespace come from and why isn't the document 
matched?

If I analyze the query using the admin backend: Field(name): name 
Fieldvalue(Index): blume2000.de  and Fieldvalue(Query): blume2000.de it works...

Anybody already had that problem?