Does this happen in every file you drag points in? Why not use the move command if you really want to snap to a point? It might be possible that your drawing has some sort of corruption, or if it happens in multiple files you have created, that your template has some sort of corruption. Have you tried doing the recover/audit/purge on the drawing?
Christopher T. Cowgill, P.E.
AutoCAD Certified Professional
Civil 3D Certified Professional
Civil 3D 2022 on Windows 10
Please select the Accept as Solution button if my post solves your issue or answers your question.