Teamviewer , mouse disappears on remote computer's vmware virtual machine

computer A is installed teamviewer portable  v13.  computer B is also installed teamviewer portable v13.

when I remote control computer B via compter A's teamviewer. It works well.

But After open the vmware virtual machine ' win 7' on computer B,  the mouse is disappeared on computer A. Then the virtual machine is out of control by computer A's mouse.

It is quite strange. don't know why.