HDMI to Cinch Adapter do not work anymore on today beta

I got a old tv with dvi and cinch only. To get my second atv4 to work I got a hdmi to stereo cinch Adapter since the release of atv4. Now withthe beta from today (15J5360b) The adapter to not work anymore. Everything is set correct. Manual to stereo and correct Resolution 720p. The other not updated atv4 works. So this is something with changed on last version.