I hope you are well today and thank you for your question.

I could confirm the issue on your shared site but it is working fine on my test site using default WordPress theme.

I can see it is working fine on your site also If we remove the post type from the search as displayed in the below URL.

https://inthekitch.net/?s=electric+skillet

This can be Storied theme issue used on your site so to confirm it just temporary use the Twenty Seventeen theme on your site. If everything works fine then it’s your site theme issue.

Best regards,
Ivory Search Support

Then would you mind if I log in to your site and test it? If this is ok then could you please share me your site log in details privately by checking the option “Set as private reply” when replying to this topic?

I hope you are well today and thank you for your question.

You can resolve this issue by adding the below CSS code in the Custom CSS option of Ivory Search plugin settings on the path Ivory Search -> Settings -> Settings

.is-menu.default form {
    max-width: 310px;
}

We will resolve the issue in the future version of the plugin.

Best regards,
Ivory Search Support

Awesome great to see you got that achieved.

Please advise if you have more questions.

Have a fantastic day!

I am not sure exactly but try deactivating the below plugins.

display posts
magento 2 catalog search
namedirectory