I'm not sure if people would consider this phantom braking, but here's Tesla Vision FSD Beta 9 suddenly slowing down from 55mph to 45mph (large green regen bar) without a clear visualization of why. Old FSD Betas with dot boxes provided a little bit more insights into everything Autopilot was seeing even if they were low confidence predictions, but now it's harder to figure out from the display why it decided to hit the brakes.