下記修正ではいかがでしょうか。
修正対象プログラム: question/type/multianswer/questiontype.php
修正箇所: 361行目
[ 修正前 ]
if (!empty($chosenanswer->feedback)) {
$feedback = s(str_replace(array("\\", "'"), array("\\\\", "\\'"), $feedback.$chosenanswer->feedback));
if ($options->readonly && $options->correct_responses) {
$strfeedbackwrapped = get_string('correctanswerandfeedback', 'qtype_multianswer');
}else {
$strfeedbackwrapped = get_string('feedback', 'quiz');
}
$popup = " onmouseover=\"return overlib('$feedback', STICKY, MOUSEOFF, CAPTION, '$strfeedbackwrapped', FGCOLOR, '#FFFFFF', CLOSETEXT, '$strclosewindow');\" ".
" onmouseout=\"return nd();\" ";
}
[ 修正後 ]
if (!empty($chosenanswer->feedback)) {
$feedback = s(str_replace(array("\\", "'"), array("\\\\", "\\'"), $feedback.$chosenanswer->feedback));
if ($options->readonly && $options->correct_responses) {
$strfeedbackwrapped = get_string('correctanswerandfeedback', 'qtype_multianswer');
}else {
$strfeedbackwrapped = get_string('feedback', 'quiz');
}
// $popup = " onmouseover=\"return overlib('$feedback', STICKY, MOUSEOFF, CAPTION, '$strfeedbackwrapped', FGCOLOR, '#FFFFFF', CLOSETEXT, '$strclosewindow');\" ".
" onmouseout=\"return nd();\" ";
}