I've had that as well. Is it a VW Group vehicle? I haven't tested it recently but in a past vehicle the car tapped the brakes when I was reversing and it thought I was getting too close to the bushes behind me, which at the time a new 'feature'. My passenger noticed and to show him again I reversed a bit more to confirm it's operation. Well, at the time, it was programmed to only do it once and if the driver ignores it, be it on his head. On my head it was as I backed deeply into the bushes....in Germany, at VW HQ in Wolfsburg, in front of many bystanders. I got out and clapped

The ID.5 had this as well but was tied into cross traffic alert. It was slam the brakes hard at times when nothing was to be seen!