SPICE HTML5 browser client doesn't work after upgrade to RHEV 3.6

Issue

After upgrading from RHEV 3.5 to version 3.6 VM consoles show a blank gray screen when connecting via Spice HTML 5.

RHEV 3.6
SPICE HTML5 browser client
ovirt-websocket-proxy

A Red Hat subscription provides unlimited access to our knowledgebase, tools, and much more.

Here are the common uses of Markdown.

Code blocks

~~~
Code surrounded in tildes is easier to read
~~~

Links/URLs

[Red Hat Customer Portal](https://access.redhat.com)