Currently running OSX 10.13.1 (17B1003) but this issue has been going on for at least a year. My computer is a MacBook Pro (15-inch, Late 2016)
After opening the launcher and selecting an account the game opens, but I get nothing but a black or white screen. The only way to fix the issue is to completely delete my TQ folder. This is incredibly cumbersome as It takes 10-20 minutes to get everything loaded again and restart the game and I then lose all my preferred game settings. It’s a serious issue. I haven’t complained that much because it would really only happen once in a blue moon. Now it happens every single time I launch the client.