REST API GET title parameter not working with UTF-8 characters

Summary

REST API GET title parameter doesn't work with UTF-8 characters

Steps to Reproduce

1. Create a page with the "Обзор" title
2. Run the following cURL

   curl -u admin:admin -X GET "http://localhost:8090/confluence/rest/api/content?title=Обзор&spaceKey=<space-key>"
   

Expected Results

The GET command returns all the page's information.

Actual Results

The code doesn't work and returns:

{"results":[],"start":0,"limit":25,"size":0,"_links":{"self":"http://localhost:8090/confluence/rest/api/content?spaceKey=GP&title=%C3%90%C2%9E%C3%90%C2%B1%C3%90%C2%B7%C3%90%C2%BE%C3%91%C2%80","base":"http://localhost:8090/confluence","context":"/confluence"}}

Notes

POST cURL works for the "Обзор" word:

curl -u admin:admin -X POST -H 'Content-Type: application/json' -d'{"type":"page","title":"1. Обзор","space":{"key":"GP"},"body":{"storage":{"value":"<p>This is a new page</p>","representation":"storage"}}}' http://localhost:8090/confluence/rest/api/content/

Workaround

Use the pageid= instead of the title=

curl -u admin:admin -X GET "http://localhost:8090/confluence/rest/api/content?pageid=10813474&spaceKey=GP"