I’ve never noticed this behavior but I agree, it doesn’t make sense to change the position of a markup that’s locked. Previously, locking was a surrogate for finalizing a point.
Another behavior we’ve noticed and my students complained about is that you cannot jump to the position of a locked point by clicking on it on 3D rendering. You need to unlock it to click and jump. Since it is easy to move the point by accident when it’s unlocked, students hesitate to unlock and click a point to jump to its position. Was this behavior intentional? If not, is it possible to change it?