Possibly related to this post https://www.b4x.com/android/forum/threads/mobile-vision-moving-to-new-home.102230/#content and Mobile Vision's move to Firebase, I have noticed that the left and right eyes have been swapped. The left eye is now from the perspective of the viewer rather than the subject, as it was previously.
Previously: https://developers.google.com/android/reference/com/google/android/gms/vision/face/Landmark and now: https://firebase.google.com/docs/ml-kit/detect-faces.
Previously: https://developers.google.com/android/reference/com/google/android/gms/vision/face/Landmark and now: https://firebase.google.com/docs/ml-kit/detect-faces.