An interesting change brought by the Wine Staging 1.9.9 release is the removal of the libcef syscall workaround, which was introduced as part of the Wine 1.7.53 release, because it was reported by users to be unreliable, and because, while not a perfect solution, it only worked in a pure 32-bit Wine prefix. The patch was quite big, and since Valve implemented the “-no-cef-sandbox” parameter into recent Steam versions to disable the buggy sandboxing mechanisms, the Wine Staging team decided that it is time to remove it from the application, making it lighter. Users are being recommended to use the CLI argument instead.