This empties a row (the second). It should be removed. This demonstrates a bug: the two cells that contained the ends of the selection aren't given a placeholder and so appear differently than the other emptied cells.

123
456
789

This empties a row (the second), but it still contains the selection and so shouldn't be removed.

123
456
789

This empties the first row, it should be removed.

Hello world!
123
456
789