Descriptive Problem Summary:
Flick proc when set up to flick object's icon_state with rewind option on - only plays its animation forward.

Numbered Steps to Reproduce Problem:
1) Apply flick("icon_state", src) to object.
2) Toggle "rewind" option of that icon_state on.
3) Test in-game.

Expected Results:
Object's icon_state flickered forward and backward animation.

Actual Results:
Object's icon_state flickered forward animation.