Searching for an issue with hyphen/underscore in its summary does not provide accurate result while linking an issue

Issue Summary

Searching for an issue with hyphen/underscore in its summary does not provide accurate result while linking an issue.

This is reproducible in chrome/firefox/safari browser in mac os.

Steps to Reproduce

1. Create an issue with hyphen or underscore in the summary. Eg. "dummy-jira- summary"
2.  Open an existing Issue and click on Link Issue
3.  Search for "dummy-jira-summary" in issue link box

Expected Results

The search result should show the issue having the word 'dummy-jira-summary' in its summary.

Actual Results

Search result does not show the issue.

Workaround

Add backslash at the end of word and it will show the correct result. Eg. 'dummy-jira-summary\'