Example how to test this behavior.
1. Download and run any version of FAR on UVNC server machine (http://farmanager.com/download.php?l=en
2. LCtrl+0..9 - set panel mode
3. RCtrl+0..9 - folders shortcuts (but they don't work because RCtrl don't sent by viewer)
N.B. To set quick folder number zero (RCtrl+0) press F9 -> c -> d than press Insert, Esc