2D graphic problems

[adimov]

There is a disparity in the way OPENGL graphics look in 2.11 and 2.12. When moving objects that have been passed layers, for example:
viz.startlayer(viz.QUADS)
viz.vertexcolor(1, 1, 1)
viz.vertex(0,0,0)
viz.vertex(0.05,0,0)
viz.vertex(0.05,0.05,0)
viz.vertex(0,0.05,0)
trace = viz.endlayer()

all my objects are moving together, not just the one I am actually moving. The objects are a part of a class with many instances and when I move one instance all of them are moving together. Furthermore, the scale of the objects in not the same as in 2.11
Also, the colors of different objects switch sometimes...
I can send the code if you want me to, or maybe you already know what the problem is,
Thanks,
Alex