Dark mode slows page loads and causes flashing
Dark styling slows page loads and causes lag and white flashes in Firefox.
Tier I · Proven The best-established problems.
7 public reports · first reported 24 March 2018 · last reported 11 August 2026
What's going wrong
Many Firefox users report that this dark-mode add-on makes pages load slowly, lag while scrolling, and flash white during changes.
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 7 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.