Translate feature always defaults to translating from English to Japanese instead of auto detecting

I used to be able to highlight any non-English text, right click it, and choose "Translate Selection to English" to get a popup window with a translation. It would auto-detect the language I had highlighted and then give me the English translation. As of a few days ago it only defaults to translating from English to Japanese. It no longer auto detects the language I've highlighted, and it no longer defaults to an English translation. I have to manually change the languages in the drop downs in the popup window each time. Every help article I've found on google says I need to change language options in the settings, but they're all set to English. There's no mention of Japanese anywhere, yet Firefox insists that I want Japanese translations. My PC is also set to English. Apparently sometimes it can still auto-detect the language since I just tried to make a screenshot and it was able to detect French -> Japanese, although many other times it thinks the Russian (or whatever) text I've highlighted is English.