Using static page and post with featured images

Usually the color of the text in the posts overview is black (when no featured photo is set for the post), and white if a featured photo is set. If I switch to the static page mode, the color of the header changes to white, but the rest of the text (before the more tag of the post) stays black.
Somethings weird with the static mode; see also the post “Words disappear after adding Featured Image” here in the forum.