Difficult way for close headfull chromium

[Vorobeyko]

When Singleton Browser Session was disabled, chromium very difficult to close. Press to "Quit" in tray did not help. And when try to close chromium via htop in terminal, chromium closed very long time

https://user-images.githubusercontent.com/11293201/102667940-bc4f9300-419b-11eb-9428-a0ad1aa917b0.mov