A few days ago, I received information from one of our customers that the Snap to Points and Lines feature does not work in 3D views. During testing, it turned out that the NVIDIA Quadro P500 card was used on his computer. In the graphics settings of this card, the mode for smoothing lines during rendering(antialiasing) was enabled. This led to problems with the selection of elements. To everyone who has the same situation, I recommend turning off the line smoothing mode.
If you found any technical problem with Shape Maker in future you can contact me directly.