Elasticsearch won't index single characters

Well, finally my problem is deeper than I think, and linked to the "stopwords" analyzer of Elasticsearch.

I tried to add a custom analyzer like that : 

public function buildAnalysis(AnalysisBuilder $builder)
    {
        // define ASCII folding filter
        $builder->addFilter(
            'gs_stopwords',
            'stop',
            array(
                'stopwords' => '_english_'
            )
        );

        // analyzers for which to inject ASCII folding filter
        $analyzers = array(
            'gs_analyzer_string',
            'gs_analyzer_string_ngram',
            'gs_analyzer_text_ngram',
            'gs_analyzer_string_exact',
        );

        // use injector to prepend the ASCII folding filter
        $injector = new AnalysisBuilderInjector($builder);
        $injector->prependFilter('gs_stopwords', $analyzers);
    }

And also registered the analyzer, but after QRR and reindexing I still don't get the results I want, for example if I type C For Clean it should return me the record with this Analyzer, or am I wrong? 

Is there anybody of you that tried such a thing ?

Thanks in advance for your feedbacks.

Best regards,

Enes

Hi everybody,

We finally get an answer from the support team confirming that this is a bug of the version 7.16.1 of ElasticSearch : 

https://portal.sugarondemand.com/#supp_Bugs/89369

The bug description is the same as our case, so if you're running on Sugar v11.0.3 on premise, you should get this behaviour too.

Hi everybody,

We finally get an answer from the support team confirming that this is a bug of the version 7.16.1 of ElasticSearch : 

https://portal.sugarondemand.com/#supp_Bugs/89369

The bug description is the same as our case, so if you're running on Sugar v11.0.3 on premise, you should get this behaviour too.