It would be nice if pressing and holding a picture for a few seconds in the chat window would let you share it to other apps. Right now in the React app pressing on a picture in a chat will make it light up a bit, but there's no prompt to do anything with the picture. Also it seems that there's no way to share pictures from within the app in general.

The only other OSS chat app I've found that allows this so far is rocket.chat (but only on their old Cordova app).