The Excel Home Tab is also known as the home cell, it also is used to execute the standard commands like bold, highlight, copy/paste. It also uses templates in a worksheet for cells, which is used to Insert and Delete Cells, and the wrong cell can be defined as follows:
In choice Formulas cell or Tab it is used to add the formula, that's why it is wrong.
On the choice page cell or Tab is used to view the data, that's why it is wrong.