This is a known issue and was reported by someone else on the project's GitHub previously.
Firefox
A place to discuss the news and latest developments on the open-source browser Firefox
Why don't you report it?
Because I don't know how to. I barely managed to post it here lol.
What this addon does exactly? I did read the extension page, but it does not tell.
Override the user-agent string presented to Google Search pages to receive the search experience shown to Chrome on Firefox for mobile / tablet.
can't you just manually edit the user agent in the about:config menu and achieve the same result?
maybe, if you can edit about:config
about config menu is only on FireFox Beta and Nightly
yeah, fennec also has it
I tried this and the issue still persists, seems like something from Google side. I am now skeptical if the addon developer or mozilla can do anything about this :(