If you copy a block level element and try to paste it all the annotations (links, bold, italic etc.) are removed and it is just pasted as plain text. You need to select the whole line with the selection region going all the way to the right of the screen.
For example in
selecting the whole of the final paragraph and coping and pasting loses anotation.
Examining the clipboard in this case its something like
<meta charset='utf-8'><p data-parsoid ...</p><br class="Apple-interchange-newline">