Last modified: 2012-10-31 01:08:31 UTC
This is problematic because [[:en:Template:Cite doi]] uses anchorencode to encode its DOIs, and DOIs with <> in it get butched. I think this is a recent change in the way anchorencode works, but I'm not sure about that.
I guess this is caused by line 5269 of http://svn.wikimedia.org/viewvc/mediawiki/trunk/phase3/includes/parser/Parser.php?view=markup&sortby=rev&sortdir=down, and is probably intentional behavior.