Reproduction steps:
1. Open the attached project "shipbashing.zip";
2. Open the MainScene;
3. Enter a play mode;
4. Observe the ship model position in the blue area.
5. Go to the HullRenderCamera script;
6. Replace GL2.MultMatrix to GL.MultMatrix;
7. Enter a play mode and observe the position of model again.

Expected results: as the GL.MultMatrix multiplies two matrices, the ship model should be in the same position both times.
Actual results: the ship model position is different when using GL.MultMatrix.

Reproduced on: 2017.1.3p1, 2017.2.1p4, 2017.3.1p1, 2018.1.0b7, 2018.2.0a1.