You should experience significant improvements in copy & paste of images within Teams, as well as to & from Teams. We are aware of a few remaining issues, but the most common cases are resolved.
Thanks again for your patience on this one.Michael Coffey commented
I'm glad I can copy into Teams now, from an email, the Photos app, and Snagit Editor. As others have mentioned, copying out of Teams still is not functioning. Thanks.Michael Coffey commented
January 2019, still doesn't work...