I found two issues after installation macOS Mojave. I have final 10.14 version.
1.I cannot take a picture for iCloud avatar using my buiit-in camera - black screen where it could show camera output (camera for all another apps like FaceTime, Skype, local contact picture capture works fine), I cannot also choose photo from my photos (nothing on a list). I uploaded iCloud photo using iPhone and it worked for me.
2.I cannot see my avatar in new App Store. There are only my initials "JK".
Does any one have same problems? How to fix it? Is it possible to fix it?
Rest works perfectly.