Question set - multiple choice bug

I'm using the H5P plugin in Moodle, the newest version, on desktop.

The bug appears in every browser.

In the Question Set content type, when you are editing a question, it's impossible to set a correct answer. When you create a new answer, everything works fine, but when you edit it, the checkbox doesn't work — every answer is marked as incorrect after saving, and it's impossible to change it. The only workaround is to delete the whole question set and create it from scratch, without editing it afterwards.

If you click the "show answer" button it doesn't show anything. 

User story:

1. Go to the Content Bank.

2. Choose Question Set from the Content Types.

3. Set the title and other options. Create, for example, 2 questions with 3 answers each, but don’t select a correct one using the checkbox.

4. Save.

5. Edit the Question Set and try to set correct answers for the previously added questions or create a new answer and set it as correct.

Result: The questions won’t have any correct answer, and it’s impossible to complete the question set.