We have a MY21 GTI, and it does the same thing on the same spot on a road here in Camberwell. The road goes down a hill, then flattens out for a level crossing, and the system sees it as an obstacle and slams on the anchors. Missus' car but it first happened to me and I got all sorts of hassle for it (way I was driving etc) and then it happened to her a few times (but not every time and usually only when there are no cars in front of you so the system is seeing further ahead).

Just one of the quirks I guess...