Adjusting size of column

dear all,

I've looked on the forum in several post and here is my probleme!

I understantd to set the fixed column size i have to set the fixed table layout using this

WD_THIS->ALV_VALUE->IF_SALV_WD_TABLE_SETTINGS~SET_FIXED_TABLE_LAYOUT( ABAP_TRUE ).

Now i set the size using this

    LR_COL =   WD_THIS->ALV_VALUE->IF_SALV_WD_COLUMN_SETTINGS~GET_COLUMN( L_FIELD ).
    LR_COL->SET_WIDTH( '80' ) .

But now i don't see alll columns of the table, i do have some rendering issue maybe ?

I do not have set width and scrollable col pos ...

But set fixed position, can this lead to a problem ?