Hi,
I have the same problem with accuracy. I created the character before patch 3.0. After patch 3.0 I don't have the base wizard accuracy (20).
I'm playing on polish version normally.
I'm playing on Steam (Windows 10). I verified my game cashe but the problem still exists.
Game saves and logs: https://www.dropbox.com/s/8uv0hzxq20zt6md/Logs%26saves.zip?dl=0