As noted, if you find examples of these, please send us the name of the material, and the Cosmos log, for the team to investigate and remedy any remaining cases. Without the log, they are often unable to do anything if the problem doesn't replicate on their side.
PS no-one is asking for folks to test all the materials :) The Cosmos team fixed most of these, and all that should remain are a few corner cases, one or two here or there. Those can just be reported as they come up, no need for users to go testing and looking for them :)