Cannot disable default applications
Summary
I cannot disable non essential default applications like Mail or Tasks.
The problem
Steps to reproduce
In the parameters go to applications and notifications, look for the default app you wish to disable, tap on it.
What is the current behavior?
In the screen describing all the app's properties, the "Disable" button is greyed and inactive: it can't be used.
Screenshot_20200920-151948_Param_tres
What is the expected correct behavior?
In the screen describing all the app's properties, the "Disable" button is active and when you tap on it, the app is disabled and doesn't appear on the desktop any more.
Solutions
Workaround
I read on the forum you can uninstall these apps using commands, but I don't want to temper with my phone;) And disabling them would be sufficient for me.