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Add-on freezes Firefox and spikes memory and CPU

Firefox freezes or hogs memory and CPU for long stretches while the Bitwarden add-on is active after updates.

Tier I · Proven The best-established problems.

8 public reports · first reported 19 January 2025 · last reported 7 August 2025

Idea report · $19 · No contacts · All sales final

See a sample idea report

What's going wrong

Some Firefox users say that after recent updates the Bitwarden add-on makes the whole browser stop responding for seconds at a time, especially during login or while copying a password.

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 8 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.