The visible property of the Flex control and the use of includeInLayout, the value of the visible property of a field is false, the page does not display the field,
But the position of the field is still there and will not be occupied by other fields. If the value of the visible property of a field is false, the value of the includeInLayout property is false,
Then the page neither displays the field, nor does it have a blank space for the field.