Is there a halachik problem with sitting on a table or surface that has siddurim/chumashim on it? What about other sefarim? What about putting one's feet on a table that has such books on it?
this article on the Topic says there is a basic consensus of Poskim that say you may not sit or put your feet on a place with seforim as printed seforim have the same or slightly lesser level of kedusha and most be shown respect as such. Source
A Jew is not supposed to sit on a table as a table is similar to a Mizbayach.