Responsive navigation bar stretches on mobile phones after WPML update

Hi Guys,

Last week I had some trouble with the navigation bar on mobile phones.
When the page was fully loaded, the navigation bar was showing normal (logo on top, navigation below).
But after a few seconds, the navigation bar would start to stretch, the logo is getting centered and the navigation is moved to the right (out of the screen).

Have you ever seen this issue?
It only happens on the translated website, not on the “main” website.