Using search.title and space fields in CQL also matches with the space creator

Issue Summary

Searching for spaces with space.title field using contains operator (~) also matches with the creator's username. It returns spaces even if the space title does not match with the given input but the input matches a creator name.

Steps to Reproduce

1. Search for spaces with a space.title that contains texts that also matches a space creator's name like /rest/api/search?cql=type=space%20and%20space.title~%22testuser*%22

Expected Results

It should only return spaces if the given input matches the space title or part of it

Actual Results

The above call returns spaces even though there is no space title that contains the word "testuser" but was created by user "testuser" or "testuser1" etc...

Workaround

Currently, there is no known workaround for this behavior. A workaround will be added here when available.