Graphic problem 
**Describe the bug**
When i launch a game or pyxeleditor or the palette, there is a graphic problem

**To Reproduce**
Steps to reproduce the behavior:
start the game


**Expected behavior**
no graphic problem

**Screenshots**
i join screen shot
1 for example 05_color_palette.py


**Desktop (please complete the following information):**
 - OS: win 10
 - Browser firefox
 - Version 66.0
![examplehello](https://user-images.githubusercontent.com/47194567/54871076-3b3d4f00-4daf-11e9-9fcc-c17e0359df77.JPG)
![exemplepalette](https://user-images.githubusercontent.com/47194567/54871077-3ed0d600-4daf-11e9-8b12-ccab84aaff2b.JPG)





**Additional context**
NVIDIA 210, with driver updated
