[Bug 2089814] [NEW] Privacy & Security does not show screenshot permissions.

[Launchpad Bug Tracker]

You have been subscribed to a public bug:

When an application requests permission to do an screenshot, a dialog
opens that offers the user the possibility of allowing or denying
applications the permission, and says the choice will appear under
Privacy settings. However this is not the case.

If the permission is denied the first time, this breaks the application,
since it can never be granted again.

If the permission is granted, this creates a security risk, since now
all applications can access the screen without an easy way to change the
user choice.

Steps to reproduce:
- Install an application that request permission to screenshots (e.g. 
flameshot), and execute it.

![The only way I have found to actually modify the choice is to access the dbus 
interface though Python 
code:](https://community.upwork.com/t5/Freelancers/Constantly-asking-for-permission-to-share-screenshot-on-Gnome/m-p/1222388#M731300)
```
import dbus
bus = dbus.SessionBus()
perm = bus.get_object('org.freedesktop.impl.portal.PermissionStore', 
'/org/freedesktop/impl/portal/PermissionStore')
perm_iface = dbus.Interface(perm, 
dbus_interface='org.freedesktop.impl.portal.PermissionStore')

perm_iface.Lookup("screenshot", "screenshot")
perm_iface.Set("screenshot", dbus.Boolean(True), "screenshot", {"": ["yes"]}, 
dbus.Byte(0x00))
perm_iface.Lookup("screenshot", "screenshot")
```

** Affects: gnome-shell (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: gnome permissions privacy screenshot
-- 
Privacy & Security does not show screenshot permissions.
https://bugs.launchpad.net/bugs/2089814
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