Ok. I think I have finally figured out what is going on. Notice that I didn't say I know why, but what. First for those of you who are having the Wi-Fi issues, are you running on dalvik or ART? I don't know why, but I think it makes a difference. I've been running on ART for the last few days, and haven't experienced any problems with Wi-Fi.
Today, for kicks I decided to go back to dalvik, just to see if I could notice anything different. Well, the first thing I noticed was that my Wi-Fi wasn't working. I couldn't even start it by deactivate it and reactivate it, or by turning on airplane mode and back off. So I went to Wi-Fi settings and had to enter in my password. Which is exactly the problem others have been complaining about.
I thought, there's no way that could be the difference, there must be something different in this build. So to test, I decided to go back TO ART and after the reboot happened, I had instant access to Wi-Fi.
So it's my theory that SOMEHOW ART is remembering the Wi-Fi password, but dalvik isn't. Hope this helps.
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