I'm quite certain that it is mentioned in the Kitzur Shulchan Aruch that one should not turn one's back to the Aron HaKodesh (ark which holds the Torah Scrolls).
Can anyone tell me where this is mentioned, I can't seem to find it. Likewise where is it in the Shulchan Aruch/Mishneh Berurah?
There seems to be a certain laxity with this. Many times in big shuls the Aron is raised above the main sanctuary in such a way that it is halachicly considered a different room/reshus/area domain/whathaveyou..which would allow for leniency. Is there other basis to be lenient (when this is not the case such as a smaller Beis Midrash with an Aron) or are people just not as familiar with this idea because often times it isn't so applicable?