The OOTB Change Categorization report does not display "CIs associated with Changes-Top 10" even though CIs have been linked to Change records.
A corrected RDL report template is attached.
To update the report;
Log into the Report Manager role
Select Report Templates
Click Upload Report
Give the report template a unique name
Browse to the RDL file (attached to this article; download it to your PC and browse to that location)
Refresh the browser (F5)
Select the Reports workspace
Edit Change Categorization
Under 'Template', select the newly uploaded template