REST API /wiki/rest/api/search returns incorrect totalSize value

Issue Summary

The value of totalSize in the response is incorrect. 

Steps to Reproduce

1. Call the REST API endpoint - Search content
   https://your-domain.atlassian.net/wiki/rest/api/search?cql=\ {cql}

Expected Results

The value of the "totalSize" key matches the number of contents.

Actual Results

It returns as below.

"totalSize": 10000

Workaround

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