Container user agents share or reset without a default
Per-container user agents are shared or lost, and there is no default user agent for new tabs or windows.
Tier II · Emerging Problems that are still building up.
4 public reports · first reported 27 October 2020 · last reported 6 June 2025
What's going wrong
Users of this add-on who rely on Firefox containers report that all containers can end up sharing one user agent after an update, so they cannot assign different identities per container.
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 4 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.