Yes, it is a slight change in how the GUI functions. There was a post from Avast about it somewhere, but I can't find it now
I was just going to post the same issue. The update went smoothly from Avast update, with a few clunks, but after several reboots it seems ok, other then this second AvastUI.
Since this is normal as you say-- will there always be 2 UI, or is this a minor buggy that will be fixed. With both of them running, they're hogging my CPU.