It's likely that this is a bug, not something you can easily fix. Open an issue on GitHub.
unable to send picture in the chatroom
Like the title said, i found that i'm unable to send picture in the chatroom, i'm not sure if it comes with this function or not? anybody knows?
It seems like this is not a feature.
If you enable "redactor" composer plugin, you'll be able to send pictures in the chat room but the "enter to send" doesn't work.