If there are 2 quizzes on one page - "Next" button will be on one of them. And they will start simultaneously

If there are 2 quizzes on one page - "Next" button will be on one of them. And they will start simultaneously

Steps:
1. Create two quizzes
2. Post them in blog on one page
Actual result: 
-there is "next" button only on the first text
-when you tap in - two tests start
Expected result: "next" button there is on both tests. They shouldn't start simultaneosly