6 years later, the "Use legacy keyboard input model" option is not there anymore.
Viewer Language: English (US)
Viewer Keyboard: United states-International Layout
Remote Language: Spanish (Latin America)
Remote Keyboard: Spanish (Latin America)
When I type from the viewer PC controlling the remote connection, it does not transmit the key I am pressing, but the key on the remote keyboard.
For example, the @ is not showing when I type Shift+2, instead it shows "
Also the ' is not working and shows the same behavior as mentioned on this threat six years ago.