Linux: Graal3D bugs

[Skyld]

Found the following bugs on Graal3D while playing with the latest version of Graal 4 (4.021 according to Updates).
Kernel 2.6.12-gentoo-r6, nVidia GeForce 4 with version 1.0-7676 nVidia drivers.

- Occasionally glitches with shadows appear (see screenshot)
- If someone says something that's long and it appears in the chat at the bottom, the chat scrolls to the right and stays there, hiding a lot of other text
- When fullscreen, I can't focus the mouse/keyboard, and after trying to load fullscreen, the Enter key simply toggles between fullscreen and window making it very hard to close the client, change server or even unfocus Graal (however this seems to be the case with non-3D servers, too)