As a Super User, I have created a new user by clicking the “Add a new user” button. After that, I will edit the permissions for this user but I can’t with the dropdown.
I also have tried with the “user edit form” option. I have set the filter to show all websites, but when I try to change the permissions, the system does not respond. Here a screen recording:
Please check the developer tools of your browser and the server log to find out why the request is failing. Maybe you are using a mod_security rule that is blocking the request.