@domubpkm now it works. I don't now if I did something wrong, but it is great to have a adblocker again

@domubpkm if you mean if Corona app still present and fully functional then the answer is yes

Hello,
I have had the same experience with my Volla. Plus strange volume drops when I switch between the speakers and Bluetooth. And an almost inaudible alarm clock even though the volume was turned up. So I had to go back to stable.
Hope this helps, Stefan