My settings are G-only, but in the public gallery, feeds, and on other peoples' pages, I see M/A/A+ images if they are shared by someone. The original posts won't show up in the public gallery or following/discovery feeds (unless mislabeled as G), but will when shared by someone else. This has been happening since my last post about it, and does not seem to have changed. This photo was screenshotted from a user's page.