Firefox version 87.0 (64-bit) on M1-based mac using macOS 11.2.3. I was happily using name and address form fill for filling out online petitions and so on earlier today, and the form fill just stopped working. I've never seen this happen before, this has always worked in every browser I've used including Firefox, Edge, Chrome, Brave, Safari, and all the other browsers I've tried or used for some period of time. No other changes in behavior, just name and address form fill stopped working. I did try dumping my user profile and starting Firefox with a new profile. While it was time-consuming to get my configuration all back to where I was, I found the same problem with name and address form filling, not working. I haven't added any extensions lately, or done anything else that would affect this that I'm aware of. Any idea how to troubleshoot this one?