Yes Juventus has major issue. Their defense is strong but their attack is weak. Tie with Cagliari was frustrating. Manager Motta midfield strategy did not help their offense. But their defense is solid because they have four defenders. However their forwards especially Dusan played poorly. They missed many chances and fell unnecessarily. Seeing them waste opportunities is painful. Dusan might not be good enough anymore. Juventus needs to find better attackers.
I see Juventus are still unbeaten in the seven games they have played this season even though Juventus themselves are in the top three in Serie A at the moment. Because the number of draws they have had more than the number of wins, Juventus can't be at the top at the moment even though Juventus are not far behind the current Serie A leaders. There are now three teams in the top five who have the same number of points, while Inter Milan and Napoli are the two teams who have made the difference in the first seven games of the season. And in general, Juventus still has plenty of time to catch up with Inter and Napoli because Motta must be aware enough to fix Juventus' weak lines before the next match takes place.
IMO, Juventus current results are not too bad even though they have drawn more than they have won, but in my opinion, it is a very stable result to try to maintain its position in the standings. Juventus actually does not need to improve anything because what I see is that Juventus current performance has no problems in every line and actually Motta is just trying to arrange the match schedule to continue to perform well in the UCL and in serie A. The most important thing is that Juventus does not lose points in every match and continues to get points even with only a draw.