New Contributor

As far as I can understand, Teams does not support pasting images with some level of transparency, in chat conversations. If you have a clipboard .png image copied from e.g. Snagit and parts of the image is transparent, it cannot be pasted in a conversation. But once you fill the transparent part with some color e.g. white, it can.

IMO you should be able to paste a picture with transparency in Teams, like you can in Outlook and S4B. Attached is an image with transparency (the middle vertical area) that at least I can't seem to paste in one of my Teams chat conversations.