It's not a fix - it's a workaround. I can confirm the uninstalling and reinstalling is solving the issues with permission. I had the problem with some apps too.
And yes, this ist not a perfect solution. But on one hand you would not have 'em with a clean installation. And the advise is always to make a clean install in case of trouble.
Second you might imagine how many hours and days the devs are spending on this project. Developing, testing, support.
And you are moaning about some hiccups and your time while using a weekly / beta? Seriously? Think about it.