Inter's latest defeat shows the former Serie A champions "lack focus", admits goalkeeper Samir Handanovic, after they fell to a 3-1 loss against Udinese on Sunday.
The visitors surrendered an early lead to their hosts after Nicolo Barella's free-kick was cancelled out by a Milan Skriniar own goal, before late finishes for Jaka Bijol and Tolgay Arslan sealed three points for their rivals.
The result saw Inter not only miss out on the chance to go top of the table, but means they will head into the international break outside the top six.
It is the third league defeat this term for Simone Inzaghi's side, and follows a familiar pattern, where they have scored once and conceded three, leaving Handanovic to mull whether their control is slipping.
"We have lost the compactness we had before," the Slovenian told Sky Sport Italia. "It depends on many things. If you make technical mistakes and lose the ball, you are open, you are at risk.
"Today, we conceded two goals from set pieces. It shows that we lack focus. We know, we study things. When this happens, it is easy to analyse why. They did a lot more than us, they deserved to win."
"We cannot show consistency right now," coach Inzaghi added. "We came from two wins, and now that is three away matches in a row where we went ahead and then lost 3-1.
"The main culprit is me because I am the coach, but it will require further analysis. We knew what Udinese could do, and we had to do more."