Dargging Problem In Sheets

Dargging Problem In Sheets

Hi

   It's been few days since I noticed this irritating bug In Sheet (that I use on daily basis), which is like this:
1) I Insert 1 or few more rows in my sheet.  2) In one or more columns that I have a formula in place, When I drag a upper cell to the bottom of the column to apply the formula to the entire of the column, It always go to the bottom of the page (unwantedly) and make a mess of may sheet.

   It would be really appreciated if you could take a look at this.