When entering class/edit a char transform cache file is generated (cache/trans/g-identifier-...-utf8.ctt.php). The second time you access this view the cache file is executed by eZCharTransform::executeCacheFile by a simple include.

The cache file however is not valid. If you put everything in comments after the value assignment to $data (which should be valid) you will get a parse error: unexpected T_STRING, expecting ')'.

Most probably it has something to do with these $data['table'] array values in the cache file (the parse error happens on the assignment of the Ö® key):

    'Ö°' => '',
    'Ö¯' => '
    'Ö®' => '
    'Ö­' => '
    'Ö¬' => '
    'Ö«' => '
    'Öª' => '
    'Ö©' => '
    '¨' => '
    'Ö§' => '
    '¦' => '
    'Ö¥' => '
    '¤' => '
    'Ö£' => '
    'Ö¡' => '
    '� ' => '
    'Ö¾' => '
    'Ö¸' => '
    '' => '
    'Ö½' => '
    '›' => '
    'Ö¨' => '
    '™' => '
    '˜' => '
    '—' => '
    '–' => '
    '•' => '
    '”' => '
    '“' => '
    '’' => '
    '‘' => '
    'Ô´' => '',

On PHP4 you normally won't see anything of this bug, but on PHP5 the content of the cache file will be displayed on the screen.