OpenSearch search form URL feature no longer works, how to revert?
I have a number of OpenSearch search engines set up, all with custom names. So I could just type "g whatever" in address bar to search in google, "w whatever" for Wikipedia, "y something" for Youtube, etc. Search still works.
However, I could just type the name of opensearch engine in the address bar to go to those sites' associated search pages. See moz:SearchForm parameter here. As of Firefox 86 this behaviour seems to be broken. Even if I switch to specific search engine by typing in its name and hitting space, I can't just press enter to go to the website.
How do I fix it?