Steps to reproduce:

A)

1. In the question bank, create a true-false, question with text 'This question is ready to use', Correct answer 'True', and State 'Ready'.
2. Create a quiz, and add this question. Ensure that the version to use is 'Always latest'.
3. Edit the question to add a second version. Change the right answer to 'False' and state to Draft.
4. Preview the quiz.

Expected result: to get the question right, you need to answer True, becuase only 'Ready' question versions should be considered by 'Always latest'.

Actual result: you get v2, and so True gets marked wrong.

Also, on the quiz Questions page, the question text from v2 is shown, and the versions drop-down include v2.

B)

1. In the question bank, create a true-false, question with text 'This question is ready to use', Correct answer 'True', and State 'Ready'.
2. Edit the question to add a second version. Change the right answer to 'False' and state to Draft.
3. Create a quiz, and choose add from question bank.

Expected result: You can choose to add the True-false question, because it has a non-draft version.

Actual result: question does not appear in the dialogue.

Some of the SQL in mod/quiz/classes/question/bank/qbank_helper.php, especially in get_always_latest_version_question_ids, needs to be tweaked.

We shoudl also check with Random questions. Again, random questions should only select ready versions.