Why should pre tags be handled like code tags? °

AFAIR do pre tags never block any other expansion, I wouldn't know why they should.

Could you please elaborate?

Edit:

Please think about how

<pre>a
<code>bla</code>
b</pre>
[download]

is rendered

a
bla
b

update Feb 07 2020

°) OK paragraph is a reason, see Re^2: Good Intentions: Wikisyntax for the Monastery (pre-blocks excluded now)