[Q] Audio in recorded slow-motion video topic

After the latest system update (4.4.2), audio in slo-mo videos is no longer recorded. I sent an e-mail to Motorola asking for clarification some time ago, but no response was ever received :'(
I tried resetting camera and gallery settings from the applications menu (erasing data and cache) but it did not do the trick...
Are you experiencing this issue too? Is there any way to take back this functionality?