2056448 - Locking "pref.downloads.disable_button.edit_actions" to "true" no longer works with new about:preferences

Status: RESOLVED FIXED

(Firefox :: Settings UI, defect)

Description

[YUKI "Piro" Hiroshi]

The option pref.downloads.disable_button.edit_actions to prevent changing of settings around helper apps does not work with the new about:preferences (browser.settings-redesign.enabled==true). This is similar to the bug 2055887.

Steps to reproduce

1. Prepare distribution\policies.json with the contents:

   {
     "policies": {
       "Preferences": {
         "pref.downloads.disable_button.edit_actions": {
           "Value": true,
           "Status": "locked"
         }
       }
    }
   }
   

2. Start Firefox (Nightly)
3. Go to about:preferences and choose "Downloads" category.
4. Scroll to the section "Files and applications".
5. Try to modify the drop-down list in the "Actions" column.
6. Close the about:preferences tab.
7. Go to about:config and set browser.settings-redesign.enabled to false.
8. Go to about:preferences and choose "General" category.
9. Scroll to the section "Files and Applications" > "Applications".
10. Try to modify the drop-down list in the "Actions" column.

Expected result

Drop-down lists in the "Actions" column is disabled and unable to modify the choice, at both steps 5 and 10.

Actual result

Drop-down lists are still enabled and changeable, at the step 5.
They are disabled and unable to modify the choice at the step 10.

Environment

Nightly 155.0a1 build ID: 20260720180121

Comment 1

[YUKI "Piro" Hiroshi]

Oops sorry I missed that this is already mentioned at the first comment of the bug 2056448. This should be closed as DUPLICATE.