Why are the action counts not the same between "Master Action Site" and "All Content"
The difference appears to be always just the
Change '__Group_xxxxx' setting
Change '__Group_0_TestSystems' Setting
Change '__Group_0_PriceFreeze' Setting
Actions do NOT appear under
All Content-> Actions
but do appear under
Master Action Site-> Actions
These additional hidden actions
Change '__Group_0_TestSystems' Setting appearing under "Master Action Site-> Actions" are created under the covers, when creating a manual group.
In the above case, the manual group is called "TestSystems". So this is a result of assigning computers to these manual groups.