I am using Selenium + Python to launch Firefox with an existing profile, not a temporary profile as by default. I have noticed that for any profile that I have used with Selenium, Japanese input is henceforth broken. Not just while Firefox is controlled from Selenium, but also afterward when I launch Firefox normally.
By "broken", I mean that if I type either in an input field on a web page, or in the url bar, or in the developer console, nothing happens at all. No Japanese or Latin characters appear. If however I go back to my default French input, then it works fine.
The issue is clearly at the level of the Firefox profile : Japanese input works fine in other programs, and works fine for other Firefox profiles.
My current workaround is to have a profile reserved for Selenium, but I'd like to fix my other profiles at least.
I don't expect someone will have a ready-made solution, but I would appreciate any clue, I don't even know in which direction to search right now.
Technical details :
I'm currently on Debian testing, Firefox 102 ESR, fcitx5 + anthy for Japanese input. But I noticed the same issue on Ubuntu 20.04, Firefox 104, ibus + anthy for Japanese input.
Steps to reproduce :
In Firefox, from about:profiles, create a new profile, and click "Launch profile in new browser". Notice that I can type in Japanese just fine. Close the browser.
Launch the same profile with Selenium using the following script :
#!/usr/bin/env python3
from selenium.webdriver import Firefox
from selenium.webdriver.firefox.options import Options
options = Options()
options.add_argument('-profile')
options.add_argument('/home/user123065/.mozilla/firefox/<randomstring>.<profilename>')
driver = Firefox(
options=options
)
Notice that I can't type in Japanese. Close the browser, open it again without Selenium by clicking "Launch profile in new browser". Notice that I still can't type in Japanese.