This extension is a tool for detecting uninterruptible reflows in the Firefox UI.

See the README.md file for more details.

Install

1. You may need to set xpinstall.signatures.required to false and extensions.experiments.enabled to true in about:config in order to install.
2. Click here to download Oh no! Reflow!
3. Go to about:addons, and click "Install Add-on From File", and then via the file picker, find the ohnoreflow.xpi you downloaded.