I also had this problem and didn’t find it anywhere. However I made a new Virtual Reality feature project and Migrated the Haptic Feedback Effect Curve from there to my project.
I know this is not a real solution but it did work!
I also had this problem and didn’t find it anywhere. However I made a new Virtual Reality feature project and Migrated the Haptic Feedback Effect Curve from there to my project.
I know this is not a real solution but it did work!