Hi, In rev 20168, grid snapping was working correctly, because when I was drawing a new polygon, new points where added at lines intersections of a axonometric or a rectangular grid. But it is not working anymore in rev 20383 (maybe corrupted in previous revisions) the snapping only occured on grid lines, not points. Maybe an option should be added in the "Snap to grid" section of the Snap tab with two checkboxes: - Snap to grid lines - Snap to grid points And when the two are checked the snapping power of grid points should be increase.