Hello developers; I have used Firefox for long time on both Mac and Windows. Recently, I have been experiencing the phenomenon described above, i.e., when entering Japanese text into iCloud Memo on Firefox, it appears as a double character. I'm sorry but I haven't taken screen shot. This is the same on both Mac and Windows. It does not depend on the Japanese input method (IME). Refresh and reinstallation did not resolve the issue. Finally, I reverted to the previous version and the phenomenon was resolved. From the above, we assume that the problem is caused by some kind of recovery in the latest version. Thank you in advance for your confirmation and response. ...Translated with DeepL.com (free version)