We are having the same issue with our VDI machines. Our ThinClients are running View Client 5.2 on Windows 7 Embedded Standard ThinPC. No particular event the cursor flips to look like the original posters' cursor. Eventually, the cursor returns to the normal arrow pointer. The time to refresh varies. Disconnecting from your View session and reconnecting doesn't always fix the issue. We do not have mouse trails enabled.
Was there ever a resolution to this original issue or did you just tell your users to suck it up?