Traffic leaks outside VPN when extension fails
Traffic leaks outside the VPN when the extension fails or sleeps, and IPv6 leaks in split tunnel mode.
Tier I · Proven The best-established problems.
5 public reports · first reported 13 April 2026 · last reported 11 September 2026
What's going wrong
Several Firefox users say the Proton VPN extension lets traffic through when it is broken.
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 5 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.