It looks like the recent beta 5 has not fixed the widget stack.
If there is a scrollable app like calendar agenda or Google notes, you can move it slowly, but if you flick it to the top or the bottom of the list, the widget stack goes into edit mode.
Already tried clearing cache for each app, but this is an issue with widget stack, not the apps in widget stack.
I cannot record an example dues to personal information in the apps.