Captchas fail or loop with the add-on enabled
CanvasBlocker causes captcha challenges to fail or loop, so users cannot pass verification on sites.
Tier II · Emerging Problems that are still building up.
3 public reports · first reported 28 March 2019 · last reported 27 March 2025
What's going wrong
Users report that with the add-on enabled, captcha challenges on some sites fail to load, repeat endlessly, or reject them with an automated-traffic warning.
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 3 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.