Could be, there's obviously something different between the cars, if is 2020 and before then pre heat pump... #speculationSeems to be a 2019/2020 issue. I don't believe anyone with a MIC 2021 or younger has had this issue.
There's a guy on the UK facebook page saying the dynamic braking change is coming... not sure he's any more reliable. I might arrange to follow my friend at a distance and get him to do an emergency stop and see what happens