I have exactly the same problem but even a little worse than described above. After the first alt tab of the program, I completely lose the ability to work with the mouse. It's just not possible. Sometimes repeated alt tab helps to regain control, but it doesn't work every time. I do not know what this is due to, but when I decided to switch to vmware latest version, there was no problem and I could click the mouse. I fully described my situation to technical support, but none of the solutions they offered did not bring the desired result. I reinstalled the program twice, but the problem remained.