Solr - Suggester custom field not detected & Multiple fields cannot work - solr

Question

Goal
Trying to implement an auto-suggester in Solr. Fields to extra suggestions from are title and content fields.
Progress thus far
I followed the official Solr guide to implement the feature, however, was stuck for a long time, as it was complaining that the custom field suggestType was not defined.
After a long time of trying I decided to add the field type to managed-schema.xml instead of schema.xml and it worked!
Thus far, it only worked when I based the suggestion field off content, however, we would like to use 2 fields to base suggestions of which is title and content.
Steps followed
1) Add custom field type in managed-schema xml:
<fieldType name="suggestType" class="solr.TextField" positionIncrementGap="100">
<analyzer>
<charFilter class="solr.PatternReplaceCharFilterFactory" pattern="[^a-zA-Z0-9]" replacement=" " />
<tokenizer class="solr.WhitespaceTokenizerFactory"/>
<filter class="solr.LowerCaseFilterFactory"/>
</analyzer>
</fieldType>
2) Add custom field which uses custom field type in schema.xml:
<field name="suggestText" type="suggestType" stored="true" indexed="true" />
3) Add 'suggest' handler in solr-config.xml:
<searchComponent name="suggest" class="solr.SuggestComponent">
<lst name="suggester">
<str name="name">fuzzySuggester</str>
<str name="lookupImpl">FuzzyLookupFactory</str>
<str name="storeDir">fuzzy_suggestions</str>
<str name="dictionaryImpl">DocumentDictionaryFactory</str>
<str name="field">suggestText</str>
<str name="suggestAnalyzerFieldType">suggestType</str>
<str name="buildOnStartup">false</str>
<str name="buildOnCommit">false</str>
</lst>
</searchComponent>
<requestHandler name="/suggest" class="solr.SearchHandler" startup="lazy" >
<lst name="defaults">
<str name="suggest">true</str>
<str name="suggest.dictionary">analyzingSuggester</str>
<str name="suggest.onlyMorePopular">true</str>
<str name="suggest.count">10</str>
<str name="suggest.collate">true</str>
</lst>
<arr name="components">
<str>suggest</str>
</arr>
</requestHandler>
4) Copy both fields 'title' and 'content' to 'suggestText' in schema.xml:
<copyField source="title" dest="suggestField"/>
<copyField source="content" dest="suggestField"/>
Questions
Why does it only work when I add the custom field type to managed-schema.xml instead of schema.xml? From my understanding, managed-schema.xml should not be manually edited.
No results seem to appear when after I map both title and content field to the custom field textSuggest. I would like to know what I am missing.
Thanks.

Answer 1

It seems like you have a typo in your copy-field definition. The "dest" attribute is suggestField but the field you created earlier is called suggestText.