* After clicking `Remote Debugging` click on `This Firefox` option from left navigation. You will see the below screen with list of extensions. Temporary extensions are unreleased extensions loaded in development mode.
* Select any file from `dist/bin/devtools/projects/shell-browser/src/prodapp` directory to load extension. If you have not built the extension for Firefox yet, you can do it using `pnpm devtools:build:firefox` which will generate build for Firefox.