Ephox : Java version 8

We’re running Version 7.3.0 Build 201306P01 and the update to java 8 causes our Ephox boxes to hang. We see the spinner, the content clears as if the toolbar is going to appear, but it never does. Reverting back to java 7 u71 resolves this issue.
Has anyone got Ephox working with java 8?

Thanks,
Nick.