External keyboard incorrectly recognized after iPad OS 15 upgrade

After upgrade my iPad pro 12.9 5th Gen to iPad OS 15, my external keyboard (logicool combo touch), which has a JIS layout, is recognized as a US layout keyboard.

This problem is reported by many users.

Is there a solution to make the OS recognize the keyboard layout correctly? Or can I select it manually?

External keyboard incorrectly recognized after iPad OS 15 upgrade
 
 
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