Make sure anti-aliasing is not forced in your video drivers. That can cause problems with missing letters (and problems with some textures). If you'd actually asked about that, or bothered to report it as a bug, instead of making assumptions, you could have had it fixed a couple days ago.
Bugs happen in all games. Even if Larian had stopped adding things and making balancing changes during the beta, there are inevitably going to be more bugs found after release than during a limited beta. The beta generally had 100 to 200+ people playing at any given time; the Steam sale jumped that up to 1000 and right now Steam says 8500 people are playing. If you add in however many are playing the GOG version, or the Steam version offline, there are 2 orders of magnitude more people playing now than the beta, which means many more hardware configurations, and many more permutations through the game.
