I found this in Revit 2019.2.6 fiddling with different room tags.It says 'Leade' rather than 'Leader'. In Revit 2025 this is fixed. Perhaps there will be another dot release for poor 2019 users.
@kimberly_fuhrman-jones I'm thinking as Autodesk will not be doing updates to 2019, and that this appears to be fixed in Revit 2021.1.10 forward at least that this should maybe be marked accordingly.