note 102369 added to function.urlencode

<?= urlencode( utf8_decode( "é" ) ) ?>

This should produce %e9 but instead it produces %E9.

How do we get this to work correctly? I have googled for ages.
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Server IP: 69.147.83.197
Probable Submitter: 217.64.255.91
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Manual Page -- http://www.php.net/manual/en/function.urlencode.php
Edit        -- https://master.php.net/note/edit/102369
Del: integrated  -- https://master.php.net/note/delete/102369/integrated
Del: useless     -- https://master.php.net/note/delete/102369/useless
Del: bad code    -- https://master.php.net/note/delete/102369/bad+code
Del: spam        -- https://master.php.net/note/delete/102369/spam
Del: non-english -- https://master.php.net/note/delete/102369/non-english
Del: in docs     -- https://master.php.net/note/delete/102369/in+docs
Del: other reasons-- https://master.php.net/note/delete/102369
Reject      -- https://master.php.net/note/reject/102369
Search      -- https://master.php.net/manage/user-notes.php