The application count is incorrect when you change between different foundations
For example, this screenshot is showing the total count for all foundations, not the count for the selected foundation:
You might see the right count displayed for a brief moment before it reverts back to the incorrect numbers.
Tanzu Hub
This is caused by a bug in the Hub UI and can happen if you change the foundation filter very quickly
This will be fixed in a future Hub release. You can avoid the issue by waiting a few seconds each time you select / unselect a foundation in the filter