The table in the LV can be sorted by clicking on a column header. However, this function can have undesirable effects if the sorting is not cancelled. Sorting is activated if you can see a triangle in the corresponding column.
If the order of the items in the table changes with each price entry, you have probably activated sorting, e.g. on the unit price. You can recognise this by a triangle in the column, here in the image for example in the EP column.
To solve the problem, right-click on the column header and then select Delete sorting.
Please also read the chapter Sort by price.
A possible activated sorting of the column OZ (item number) could also have undesirable consequences, as the order of the items in the bill of quantities (BOS) may no longer be displayed.