I’ve noticed some strange behaviour recently where after adding a menu item and saving it, my Main Menu Locations are lost, and I have to select them again. I am using Polylang, and I have added a Secondary menu above the standard Vantage menu, so in total I have 4 menu locations (Main, Secondary, English, French), my menu.php additions are done within a child theme, I am also using Max Mega Menu. This behaviour is recent, I’ve tried disabling any recent plugins I’ve added, and nothing is fixing it. The interesting this that it is NOT affecting my Secondary menu that I added within the child theme.
Has anyone had a similar issue?