Hi GKun :
I turned off the phone (press and hold the middle button)
The, I went to the Store app but it would not open. This is when I did a soft reset (don't want to lose my data).
To soft reset- press and hold the middle button + while holding press and hold the low volume button. It may take few seconds.
I went back to Store app and it came up this time.
I did see the affected apps are lined up for update. Why they did not get auto update? I have no idea.
So, I updated them all.
Restarted the phone- still issues.
Restarted and went back to Store app. To my surprise, those same apps needed update again! So, I updated them again.
Restarted the phone.
It is this time my apps became normal.
Well, I said apps are working normal. That's not 100% true. I see the similar symptoms (pressing home button closes already opened apps!). I just do a restart the phone and it works for a while.
I understand the codes are beta and bugs are expected. I am hopping for a better build soon and I should not have to do this phone restart business!