I just noticed that Remote Utilities seem to incorrectly interpret keys on the numeric keypad. At the very least, the numeric plus, minus, times and divide are sent as regular keys rather than numeric. It is easily noticeable in two-panel file managers where these keys have a different meaning - a regular plus is simply a plus, a numeric plus allows group selection of files.
Unfortunately, we couldn't reproduce the issue in our environment. Could you please clarify what type of keyboard do you use? Did you use the Numpad keys and not the numbers at the top row?
Also, please try to use the Legacy keyboard input mode. To enable it please do the following steps: 1. In the main Viewer window right-click on the Host icon and choose Properties. 2. Go to the tab Remote Screen -> Mode. 3. Enable the checkbox Use legacy keyboard input mode.