I don't understand how the default user.reg is generated, but if you delete it and start Wine, a new one will be generated, and the [Control Panel\\Desktop] key is empty. So there is no UserPreferenceMask at all in the default config.
I don't understand how the default user.reg is generated, but if you delete it and start Wine, a new one will be generated, and the [Control Panel\\Desktop] key is empty. So there is no UserPreferenceMask at all in the default config.