search icon disappears on mobile view

Hi,

I am in the process of using zakra as a base theme for a new theme for my website.

I have created child theme with zakra as the base theme.

I have noticed that both with my child theme, and with original zakra theme, the search icon disappears from the menu, when in mobile view (it is not present on the side menu).

I have tried disabling all my plugins, and this does not fix the issue.

Is there something I am missing here? Could you give me any advice?

Thanks

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