[1.2] Drapes graphically overlap objects in front of them

[ShadowTani]

A minor visual issue that have actually been around since drapes was first introduced that finally annoyed me enough to report it, lol.

Attached is a picture showing how thrones and some other objects will be graphically overlapped by the drapes even if the drapes are supposed to be behind them. Drapes do not have this issue with objects placed behind them, including other drapes.

[Pheanox]

Thank you for the report.