Facing issue in ionic v4 with Japanese and Chinese keyboard in ios

we have ion-content, inside which we are using some ion-input field. Our application supports around 10 languages. but we are using Japanese or Chinese keyboard, it causes some issue. 1)you type in a character once, two characters will show in the screen. For example if I type in for “あ”、it will show “ああ” as shown below. 2)if you type あ,then type い. in screen you can see ああい.

Then i have changed all the ion-input to ion-textarea, with Japanese or Chinese keyboard now i am not facing any issue. But now with text area some other issue I am facing. Can you please let me know how to fix keyboard issue with ion-input