JUN-HO.H

If you already have a `jest.config.js` (or `.ts`) file, you can put `jest-canvas-mock` in the `customJestConfig.setupFiles` array. It works for me. Reference: [Official Jest configuration - setupFiles](https://jestjs.io/docs/configuration#setupfiles-array)

Have you checked your actual 'request headers'? I also have this problem, but I don't think it pertains to a library issue. My actual OS and 'User-Agent' appear as follows....