Strange FOF rendering behaviour

This is most evident if you have a shield, but possible to perform without one. Don't recall seeing this in 2.1.14.

With shield:
http://i.imgur.com/tpHcoTw.gifv

Without:
http://i.imgur.com/PxybMmy.gifv

First issue is a bug with overlays; when you're spinning with the elemental shield or armageddon shield ...apparently the overlay objects with them are so small that spinning cause them to physically be totally underground, as it turns out. This causes them to be rendered behind the FOF plane, which in turn leads to the sprites behind them also being rendered beneath the FOF plane.

Haven't looked into the second issue yet, it's probably not related though.