Fixed.
Fix for this will be added in next theme update, because of seems it was our bug. For now, I’ve enabled search in header (Thame Options > General > Header Settings > http://prntscr.com/hsveja) and added custom code in Theme Options > Styling > Custom css to hide the search. After the update you will be able to disable the search via Theme Options and remove this custom code http://prntscr.com/hsvdm7.
Thank you for the notice.
Have a nice day.
Regards