Well - tested the remote functions today - and it all worked well.

However - did experience the menu bar and mouse remeining on the screen when sending a 'go to full screen to all servers message' -upon moving the mouse on the relevant server - and clicking anywhere other than on the menu bar - it disapear.... Possible because I sent the 'full screens' remote command while that particular mac was running catalyst in the background - not foreground (ie had a folder open on the desktop).... So small bug.... but workable...

S