Prompt bug

I'm a Japanese user. Yesterday, the prompt for generating words suddenly switched to English, which is a bit inconvenient. I've been generating images with the same words repeatedly lately, so I can understand the content to some extent, but I still feel more comfortable with Japanese.

I don't recall changing any settings. My language setting has been Japanese since I first logged in, yet only the prompt is in English. I can't figure out how to fix this myself.

Please investigate the cause and fix this bug? Restore my prompts to Japanese as they were before.