For some reason, Sine doesn't work with Physics very well - at all, actually.
If I have an object with Sine enabled, and decide that I want to enable Physics in order to make the object fall, the physics won't work. It'll continue to sine, but the object won't fall.
Any tips? Is this unavoidable? I've double-checked with multiple items, including newly-created objects unassociated with any events in the game.