We should have the both side identical.
The BR tag.


Some text
...


Some other text.
display:block (0px).

Some text

...

Some other text.
display:block (1em).

Some text

...

Some other text.
content:'\A' (pre).

                

Some text

...


                Some other text.
            
content:'\A' (pre).

                

Some text

...


                Some other text.
            
Currently, no spec are accurate enough. Please consider that the selection should have the same look, too.