Shaders doesn't work

When i’m trying to add new shader effects/fill nothing is happening. The effect appears in effects panel, but nothing changes on the canvas. It doesn’t depends on what effect or preferences i use — it just doesnt work! I’m sure (and i’ve checked) that my laptop supports such technologies. Web version doesnt work too. Maybe i’m wrong with something or it’s a bug?… What can I do to fix the problem?