Audit query Rest API does not return the correct totalItems

[Description]

When using the REST API https://api-explorer.alfresco.com/api-explorer/#!/audit/listAuditEntriesForAuditApp the totalItems field is not accurate.

[Steps to reproduce]

• Install alfresco 5.2.7.5 using the installer
• Configure auditing as per documentation (https://docs.alfresco.com/5.2/concepts/audit-enable.html)
• Start alfresco
• Login to share as the admin and  create site and upload documents to create some audit entries
• In a browser window navigate to http://localhost:8080/alfresco/api/-default-/public/alfresco/versions/1/audit-applications/alfresco-access/audit-entries?skipCount=0&maxItems=1000 and note the totalItems field
• In another browser window navigate to http://localhost:8080/alfresco/api/-default-/public/alfresco/versions/1/audit-applications/alfresco-access/audit-entries?skipCount=0&maxItems=5 and not the totalItems field

[Expected Behaviour]

Both of the totalItems values in both requests are the same number.

[Observed Behaviour]

The values for totalItems are different in both requests

[Analysis to date]

The totalItems value seems to be driven by the maxItems value

not sure if this is related since a large value of maxItems can uncover the actual totalItems.