Add Search Engine from Mycroft Project per jingyu9575

Update: Mycroft Project has updated to include the workaround now. You can uninstall this extension.

Firefox 65 removed the non-standard feature that Mycroft Project relies on, preventing it from installing search engines. This extension provides a workaround to install search engines from it.

When clicking a search engine link from Mycroft Project, an installation page will show. Click the "⋯" menu in the address bar and select "Add Search Engine".