Cookies from non-whitelisted sites are left behind
The add-on reports cookies deleted, but cookies from non-whitelisted sites remain after restart, manual clean, or the time limit, so its main job fails.
Tier I · Proven The best-established problems.
29 public reports · first reported 7 August 2019 · last reported 25 January 2026
What's going wrong
Many Firefox users say the cookie cleaner stopped removing cookies from sites they did not whitelist.
AI-assisted: written with the help of AI from the reports. The idea report has the full summary.
In the idea report
- The full summary.
- The products the 29 reports are about, and how many came each month.
- Related problems.
No business has been found with this problem yet, so the report has no contacts. All sales are final — no refunds. Pricing.