Federation is broken on sib-display (0.10)

When pointing a sib-display to a source container with sib core 0.10 it shows unexpected results.

https://jsbin.com/hifovoteni/1/edit?html,output

@balessan @matthieu Didn't spot this one at first, looks that it's our last blocking brick to deliver 0.10 on Hubl.

edit: adding screen capture, just in case: