Hi there,
I was also surprised, it should not stretch itself like that. It’ll be like before in the update next week. Thanks.
In order to include the search in the main menu, disable that and use this plugin:
https://wordpress.org/plugins/add-search-to-menu/
The βPopupβ style works best, otherwise you may need to add some CSS.
It is under Ivory Search → Menu Search → Header → Style.
Hope it helps!
Thanks for your answer and your help.
I’ll check it out.