When mousing over Legion order hall follower portraits. Note that this also happens with the BFA mission table (and in ChampionCommander):

60x ...ns/Blizzard_GarrisonBase/GarrisonFollowerTooltip.lua:50: Usage: GetFollowerLinkByID(garrFollowerID)
[C]: in function 'GetFollowerLinkByID'
[Blizzard_GarrisonBase/GarrisonFollowerTooltip.lua]:50: in function 'GarrisonFollowerTooltipTemplate_BuildDefaultDataForID'
[OrderHallCommander/OrderHallCommander.lua]:468: in function <...aceOrderHallCommander/OrderHallCommander.lua:452>

Locals:
(*temporary) = "|Hgarrfollower"