I wasted a lot of time in trial and error before I discovered that
you need to end each line
in a blockquote with
two spaces
in order to force linebreaks
Please add this to the help for blockquotes
Note: The 2 space markdown for <br/>
is not specific to blockquotes, but is also valid markdown for regular text.
It is, however, already in the Markdown help, which is accessed by clicking the advanced help link when using the question or answer markdown editor.
<br>