Subpages fail to update on changes to draft field.

[scottredig]

I have this snipped in my index.shtml which lists all of the blog posts:

<ctx :loop="$page.subpages()"><ctx :if="$loop.it.draft.not()">

However, changing the value of the draft field doesn't actually update whether an item appears in the list or not. The only way I could get it to update it is if I clear .zig-cache and zig-out. $page.draft appears to update properly, so it seems specific to subpages(), though I didn't test to see if it's specific to .draft.