Pages and Custom links not save

In Mega menu, When I add one of the Pages item or add Custom link to the menu, it is not saved and does not give any error message
I check that [Include in top menu] for pages and is selected.

Greetings,

Thank you for reaching out to us!

Unfortunately, I'm not able to replicate the issue locally.

Could you please raise a ticket in our ticket system and provide us with access to your administration, so we can investigate further?

ticket number: 19479

Greetings,

I have just replied to your ticket and we can continue the communication in the ticket.