Find File scrollbar looses 'arrow'

[gotar]

There is a scrollbar in "Find File" results dialog. When position indicator (asterisk) 'covers' an arrow ( ^{or v) and then uncovers it (by moving back, not wrapping around to the other end), the arrow doesn't reappear until indicator is moved a few lines further (to make the results scroll at least one line).}

Also note, that utmost positions of asterisk in fact don't cover arrows, so either the arrows shouldn't disappear in first place, or asterisk mark should have one character each side wider movement.