Extrude error

Dear Sir,

For V4.25.3, I tried to extrude geometry.

After the extrusion, I could select proper faces in the first and second click to pull out the faces.
If you continue to select other faces, the selection is incorrect.
After several click, you make correct selection of a face. When you pull out the selected face, and the adjacent and unrelated vertices are pulled out too.
Then you press ctrl+Z to undo. Then, the pc crash!!!

Please check