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.Dan commented
This is such a big fail! Hoping it is resolved soon.
This feature request is still being reviewed by the feature team.
As silly as this may seem, it's actually a pretty significant feature that greatly affects the user experience.