Bitrix News: created property doesn't display in the editing of an element -

i created property in news infoblock settings. checkbox "active" , "show on page of editing of element" set.

but don't see field can set property when add or edit element.

please, don't send me oficial bitrix support. don't need "we'll respond after 3 days".

perhaps have customized element form. if - can add new property edit form by clicking 'cogwheel' in right top corner