Stuck at 480p in Chrome and Firefox (Score 1)

I've been following this thread and while the focus has been on 1080p browser support, something has definitely changed with Netflix and most videos don't get above 480p when streamed in Chrome or Firefox. Netflix originals still get to 720p (HD)..but most anything else is capped at 480p. I've checked titles that were streaming in HD prior to a month ago. I've contacted Netflix support and they've been useless, initially telling me that "HD" was never supported in Chrome or Firefox. I had to clarify that 720p is HD AND send them a link to their own page showing Chrome and Firefox are both supported for 720p. I'm thinking this is a change tied to the widevine bug/exploit that was reported on a while back.