Bugzilla

Note:
Set browser.settings-redesign.enabled to true.

Affected versions:
Nightly 152.0a1(2026-05-08)

Affected platforms:
Window 11
macOS 13.2.1
Ubuntu 24

Steps to reproduce:

1. Open Firefox.
2. Open 3-4 tabs with different websites.
2. Navigate to the Settings(about:preferences) page.
3. Click on the "Privacy and Security" section.
4. Navigate to Browsing Data.

Expected result:
'Websites are currently using X GB of disk space.'  should be displayed, as shown in the Figma design.

Actual result:
'Calculating site data and cache size' message is displayed. Please see the screenshot attached.

Regression range:
Not a regression, it's a new feature.

Note:
Set browser.settings-redesign.enabled to true.

Affected versions:
Nightly 152.0a1(2026-05-08)

Affected platforms:
Window 11
macOS 13.2.1
Ubuntu 24

Steps to reproduce:

1. Open Firefox.
2. Open 3-4 tabs with different websites.
2. Navigate to the Settings(about:preferences) page.
3. Click on the "Privacy and Security" section.
4. Navigate to Browsing Data.

Expected result:
'Websites are currently using X GB of disk space.'  should be displayed, as shown in the Figma design.
 The site data and cache size should be calculated and displayed without clearing the browsing data.

Actual result:
'Calculating site data and cache size' message is displayed. Please see the screenshot attached. 
The site data and cache size are calculated and displayed only after clearing the browsing data.

Regression range:
Not a regression, it's a new feature.