Thanks for this! Was an interesting bug that would manifest itself when the push-layer reaches the client before the XHR request finishes.

All fixed now and will be deployed soon.

Hmm, that hasn't been my experience. For a double jump, you should just be able to drop the first jump, and it should be your turn still, and you can (and are forced to) do the second jump.

Are there any more details you can provide so that I can start to debug this?

Edit: we've confirmed the bug. We're looking into a fix now. Thanks for the report.