Wrong format when adding a new row into a "formatted excel table"

I am very often using the below functionnality to save time in formatting tables, benefitting of the advanced formulas functionalities. 

Nevertheless, i am regularly facing the below issue. 

The situation : 

In this example i have the below table formatted : 

I am adding a row at the botom of the table : 

As you can see, the row is automatically formatted, but instead of applying the expected format, the added row is blue....this blue color is coming from a row i had into my initial table before i converted it as an "Excel formatted table"....

• If I insert a row in the middle of the table, the row is properly formatted. 
• In this example this is the color of the row that is not as expected but i faced some different cases, such as : "the dropdown list is not inserted when i add a row"....

What i would like ? 

• Know where i can modify the row used as a "template" to format the inserted row into my table. So that i can adjust it and avoid the issue i face