When I logged in my work environment from Citrix Receiver in Windows it works normally. When I tried the same in Ubuntu it works but there is a black box about double size of mouse pointer. It does work but it seems too strange. Is there some specific configuration that I could look at?
I was having this exact same problem. Apparently its to do with 'alpha blending' on the mouse pointer shadow (see here http://citrixblogger.org/2008/02/07/cursor-shadowing-turn-it-off/)
The following fix worked for me:
1) Log into citrix session 2) On the remote machine youre logged into go to: 3) Control Panel > Mouse > Pointers 4) Under Scheme select None 5) Hit apply
Hope this works for you.