Jovo State is lost



I develop a Quiz Game with Google Assistant and I’m using Jovo as webhook backend.
After user starts game session he forcible enters PlayQuizState and immediately will have been redirected to LevelQuestionAskIntent in that state.
After what question is appearing in Google Assistant.

Also Quiz have CommandIntent in the same state to start user routing to appropriate commands.
One of user cases is

if (this.$inputs.command.value === 'Repeat') {

is for repeating the question.
When user asks Repeat first time all is good. Quiz starts executing of LevelQuestionAskIntent handler, but the second time is doing nothing and conversation ends.
I found that JOVO_STATE is dissapeared when user asks second time.
What is that, why it’s happenning?