Select Box - why not allways first element?

Hello - find attached an example worksheet i am working on -
As you can see i have a table with a data validation in the columns A and H to the second worksheet "param".

When i insert a new line with eg. Strg and + in row 10
you see when you open the cell A10 that automatically the first entry (<SELECT>) is selected.
But when i open the cell H10 tha last entry (blank) is selected

Why is there a difference between this 2 cells?
(generally i would like to have allways the first entry of the dropbox selected when nothing is in and the user open the drop box)

Hello - thanks for the reply - but this is only working when the FilterList is build form row 2 to 6
i changed this to row 60 and now again its not working eg. for I2
see attached