OMG! I can finally figure out what theme to blame!

[pfaffman (Jay Pfaffman)]

@saquetim

Btw, I’ve pushed a commit replacing this.container by this.register to get rid of the warning. @pfaffman can you try and confirm that it is gone?

Awesome! That did it. I was going to try to submit a PR yesterday but got in a fight with git.

Thanks!