Mineshaft pillars do not fully generate when they encounter water. They are then cut and do not touch the ground. The seed used is: -1192420621 and the coordinates are:  20  -20  367 . I want to clarify that I have activated the experimental gameplay of caves and cliffs. The mineshaft to the right of the bridge is also a bit buggy with its generation, it's like there's one getting in the way over another. The coordinates of the bugé mineshaft: 3 -19 382.