Fails to fire if more than one node is being rendered

(I've not got the code handy right now, but before I forget)

There is a small hack in contextual_view_modes_node_view_alter() intended to prevent recursion - which I understand.
But it exits if rendering ANY node the second time. So on page layouts where there is more than one node being displayed, only the first one works.

I was able to replace that single static flag with an array of nids so I could check if we've altered THIS node already, not just any node.

(code on work machine, I may be able to pull it back, but this explains the issue and A fix)