You see the red chair on right side? There should be 4 of them. If you go to it, the chairs will appear.

Very likely the problem is because of that vis leaf (the blue box showing it)

http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=626872732

p.s. looks like meshes on behind are disappearing too.

http://psteamcommunity.yuanyoumao.com/sharedfiles/filedetails/?id=626874976

I dont know if its related to vis groups, to LOD or to something else. So far it's the only place where I noticed this happens.