When entering emojis using the Windows emoji picker or the compose sequence, the right unicode character is not sent to the application.
A ReceivedCharacter event is triggered, however it seems like there might be issues with UTF-16 and UTF-8 conversion, since it's received as '\u{d83d}' and '\u{de00}' which is the UTF-16 representation of the chosen emoji (see https://unicode-table.com/de/1F600/).
More details can be found in the Alacritty issue: alacritty/alacritty#2796