If your mouse is erratic or keeps disappearing while using Workstation or vSphere Client here's the solution!
PROBLEM SOLVED!
I tried everything on this post and others to no avail nothing worked! But in my search for the answer I finally found the solution!
Find the vmware.exe or VpxClient.exe if you're using (VMware vSphere Client) on the Host or Control System, right click, goto Properties, click on the Compatibility tab, then check the box "Disable display scaling on high DPI Settings". I also enabled Compatibility Mode and choose Win7, then close and re-open the VMware Workstation or vSphere Client and it now works fine!
Hope it works for you! Let me know!
Peace!
SJDthePCMD