Yes, I know that WebGL has been around longer. I was playing other Facebook games that converted to WebGL long before Flash support ended. But before Flash ended, I didn't have the problem of WebGL games freezing up my computer when I clicked to exit full screen mode. I checked the names of the Windows updates, and interestingly... one of them involved Flash. It was installed in early April. Four updates were installed in April, and the version of my Windows 10 changed. When I first reported the problem here, my Windows operating system
was up-to-date.
