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.Jose Meladine commented
Pasting images directly and attaching image formats like jpg, png and gif in Microsoft Teams conversation is not working in both desktop application and in web app, user in the other end is not receiving the image, for long time it is only showing sending or uploading and finally fails, Please help,
Microsoft Ticket number : 16146423 , without solving the issue ticked was archived.