no tooltips / help tags in finder list view

hello all,

in finder's list view, no tooltips/help tags appear when you hover over long file/folder names.

they appear over the finder window icons, arrange, share, etc, and appear in all the other views when hovering over long file names.

i've changed the tooltip delay time in finder, via terminal, with no effect on the lack of appearance.

any help please?

thank you.