In general, there are pages with this menu on
jQuery . For some reason, everything is fine on one page, and on the second when the menu is opened, it automatically collapses.
Here is the page where it works correctly. But where is not correct.
If you have time to click on any category from the drop-down list, it is displayed normally on a new page. Here is an example .
What is the reason for this behavior and how is it possible to correct?