Remote Assist Mobile ( RAM ) takes a screenshot the moment the bottom is initially pressed. The button will switch form the camera icon to the checkmark, and the 'sending' banner is informing the user that RAM is sending a JPEG image to Teams Desktop.

'Sending' message confuses the user instead this should show more appropriate wordings like 'Processing' or 'Sharing the Screenshot' since the events are taking place at the backend and from the user point of view is it giving different understanding.

Point here is to make the overall customer experience more user friendly.