The Kanto and Unova parts work, but the Hoenn part doesn't (at least for Android). Here's a reupload that does: https://mega.nz/file/OZxVDaQY#DsotOK0b5w_lKaBT_MtPuyjrDsJKUHUp-ZrVBmadbjI
I'd guess it's not a bug, but a nerf so you have to use Leppa to recharge Sweet Scent in the field, not just get new charges from a freshly caught Smeargle.