You should block users from ending processes with the Chrome task manager for managed Google domains.
To block the Chrome task manager:
- In the Google Admin console, go to Devices > Chrome Management > User & browser settings > Apps and extensions.
- On the left, select the organization that contains the desired users or enrolled browsers. To select all users and browsers, select the top-level organization. Otherwise, select a child.
- Under Task manager select Block users from ending processes with the Chrome task manager from the dropdown list.
- Click Save.