When reviewing the Patch Management Compliance by Computer report, some of the expected computers are not showing in the report.
Patch Management Solution 8.x
Setting the start date of the report back to a date in 2000 allowed the missing computers to then show in the report with the newest updates and also dating back to 2014. After installing the missing older patches, the computers then showed up in the default settings of the report. The default date range is one year back from the day the report is opened and run.