Vertex snapping issue in maya


For vertex snapping i selected vertex and hold v then do middle click to destination vertex. Some times this method working fine, but sometimes on middle click selected vertex is not snapping (no snapping effect) or snapping to wrong vertex instead of snapping to required vertex


On setting env “MAYA_VP2_USE_VP1_SELECTION = 1”, vertex snapping issue is happening in viewport 2.0 only.
This issue is solved in Maya 2019