I have noticed a problem with ambient light in the Unity 5 beta. It seems the Amount in Environmental Settings is bugged somehow. I made a video which illustrates this very well:
www.animechtechnologies.com/video/blue_ambient_bug.mp4
Hi Horp1, thanks for taking the time to flag this! Is there any chance you’d be able to file a bug report with the scene included so that our devs can take a look? There’s info on submitting a report available here - http://unity3d.com/BugReportingFAQ
Absolutely. Will do asap.