Bug? Unable to pass theory lesson/course

Hello, I'm already struggling a few days with this problem and I think I found a bug in the code, or I'm just being stupid and doing something wrong. In both cases, I hope you can help me with this. I have a course with a few lessons. One of them is a theory lesson with only slides (no questions). First I had set the minimum passing percentage of that lesson to 100%, but because there are no questions where a user can get any score, it will never pass that lesson. So I decided to set the minimum passing percentage to 0%. This solved the first problem and users were able to pass the lesson. A little while later, I noticed the rule "User has passed all required quizzes" was never fired anymore. With some debugging and digging I ran into this little piece of code, which is a conditional for the rule: /profiles/opigno_lms/modules/opigno/opigno_quiz_app/opigno_quiz_app.rules.inc:133 <?php /** * Condition: User has passed quiz. */ function opigno_quiz_app_rules_has_passed_quiz($node, $user) { $score = @current(quiz_get_score_data(array($node->nid), $user->uid)); return !empty($score->percent_score) && $score->percent_score >= $score->percent_pass; } ?> As you can see, there is a !empty($score->percent_score) part which will always return false in my case, because my $score->percent_score is always 0. Shouldn't this be rewritten to fix this issue, or am I making a mistake and do I have to do this in another way? Hopefully you can help me. Thanks in advance! Bryan