@DTS Engineer Thank you for kind explanation. I submitted it using the Feedback assistant, and my report id is FB15494670

@DTS Engineer Could you explain in detail how to submit a feedback report to the System Keyboard Team? It seems that there are no tags related to the keyboard in the forum topics.

@DTS Engineer This issue only occurs when the keyboard is set to bilingual mode. Please try removing keyboardType and check if the keyboard is in bilingual mode. Additionally, it has been confirmed that the issue occurs regardless of the keyboardType. In Korean, which is a combinational script, when limiting the number of characters in a field, using the delegate method can result in the last character not being fully formed, causing input issues. This bug also occurs in text views and has been observed in several commercial apps.

example project https://www.icloud.com/iclouddrive/0bc5qQGEcQzLKYS1P_7beBVTQ#bilingual-keyboard