Thank you very much for your feedback and suggestion. Ah I see, I will check in JOSM then.

hi, thank you for checking. May I know, maybe example for which part (like by XY) that snapped to the roads and paths? and also, I think for this grid, I didn't do by my self, because I wasn't able to continue finish this grid due to someone else also working on this grid after me, I think.
But as far, as I remember, I have tried to not snap to the roads or parths, that is why, I'm a bit curious, maybe if you can share to me the XY of part that snapped their corners, or snapped to the roads, this can help me to make sure for next.