WebGPU and white screen in different browsers

Question

I installed chrome canery on my tablet to use webgpu with three.js. This also worked for some time after I activated webgpu in chrome://flags. Recently, however, I only get a white picture. So I looked for other browser. Google dev, it worked then, but after a while the white screen also came up when rendering. So I installed edge canary, it worked again, but after a while the white screen also came up when rendering. I don't understand the phenomenon. Why does it work for a few days without problems and then not anymore? Anyone know the phenomenon?