I tried to fire up kiri:moto today and it was just hanging. I figured you broke something and I would come back later before reporting your bug :).
Then I went to onshape. Turns out, webgl wasn’t enabled all of a sudden. I had updated firefox today, so I go force enable it and onshape and kiri:moto work again.
It was clearly a problem on my end (I use Linux and sometimes you have to fix problems like webgl not working. It is a consequence of being in a rare configuration). I do think it would have helped if kiri:moto gave me a similar message to onshape though, saying I didn’t have webgl enabled.
Or maybe this will be helpful to someone googling in the future, or maybe just a funny story.