Frequently Used Quick Actions don't appear in quick actions

We've attempted to update the quick actions under My Team without any luck. Changing the order of the groups works (for instance, if we move Absences up, the 4 items within that then appear in the Quick Actions above the rest of the items), however marking anything as a "Add as a quick action link on home page" doesn't do anything:

Fig. 1 - Added Manage Direct Reports as a "Frequent"

Fig. 2 - "Frequent" doesn't appear. This is the same no matter what is added to this.

We've tried to create a group of our own by repurposing one that we weren't using, duplicating the tasks into this, however when you access these tasks they then inexplicably link to incorrect pages (i.e. Existing Absences then takes you to People instead), making that a non-starter as an alternative.