I haven't had problems with the WebGL client in quite a long time, apart from:
- Random freezing or stuttering from time to time. Lasting anywhere from 4-10 seconds. (Death sentence if Sparring/PKing.)
- Random sections of the screen being "locked" and unable to be clicked from time to time. (Requires a restart, happens when locking gralats / moving furniture most often.)
- Keystrokes being duplicated if typing too fast.
Other than that, we're getting there... I think.