Leica did fix the problem. They added a small lens into the viewfinder mechanism which eliminated the flare. MP cameras have the improved viewfinder, so they don't flare. Some folks have had the MP viewfinder installed in their M6 but most folks don't. In reality, the flare is no big deal. It rarely happens. As somebody else suggested, you may see it a few times/year. If I had a M6, I sure wouldn't worry about it.
Originally Posted by rolleiman