Summary
Recently Closed Tabs are not cleared when quitting Firefox with “Delete browsing data on quit” enabled (all options selected except Site permissions)
Product
Mozilla Firefox
Version
148.0 (Release)
Build ID: 20260216153405
Multiprocess Windows: 2/2
Fission Windows: 2/2 (Enabled by default)
Platform
Android 15
Description
When quitting Firefox via the “Quit Firefox” menu option, Recently Closed Tabs remain available in browsing history, even though “Delete browsing data on quit” is enabled and all data types are selected (except Site permissions).
The browser clears the regular browsing history, but the Recently Closed Tabs list is not cleared.
Steps to Reproduce
1. Open Firefox.
2. Open any website.
3. Close the tab.
4. Open the address bar menu and tap “Quit Firefox”.
Expected Result
All browsing data should be deleted on quit, including Recently Closed Tabs.
Actual Result
Regular browsing history is deleted, but Recently Closed Tabs remain accessible.
Regression
The issue started after updating to Firefox 148.0.
It did not occur in the previous version (147.x).
Additional Notes
- “Delete browsing data on quit” is enabled.
- All options are selected except “Site permissions”.
- The issue is reproducible consistently.
