After finishing game, retry button does not create new random position answer

[ngoctam1011]

When user completed game, after click Retry button, the new game is created, but it still remember the previous position correct answer box,
For example, the 1 question -> correct answer position box is the 3rd box, the new game still create the right answer at the 3rd box.
Please help to fix the issue for that, the new game will create new random position for that one.