Family XP bonus for max fragments is minus
When a placed foundable has max foundable, I let it shine until I prestige the page. So in the brilliant event I returned a quaffle (low threat). My quaffle had max fragments. Before the event it gived 4 (3 for returning low, 1 for max fragment). When I returned at the event it gave 2. However low foundables give 3 family xp. So the issue is that I received 3 + -1. So the max fragment bonus was minus. I also returned a beater's bat which is medium and has max fragment, it gave 4. However it must be 6(5 for medium + 1 max fagment bonus). Again it is -1. Today I catched a slytherin student(low) and it gave 2 again so the issue isn't solved. The same issue happened with the Marauder's map:
It says that there is a max fragment bonus so I should receive 6 instead for because it is a medium foundable.