Search for numbers in text fields return no results when indexing in russian

When using russian indexing JIRA not search for numbers in text fields with numbers (Text search module in Navigator) and custom fields with Free Text Searcher.

In "other" language and English - search for numbers fine, but with wrong Russian search.

I.e. search for code in information or in custom field for card number (i.e. search for "4013*" returns 0 records even if exist record with value "40135083")

Workaround

• Go to General Configuration and set the indexing language to "Other"