Minor problem when typing korean character in editor

• Problem: when typing korean after pressing 'shift key', releasing it moves text cursor(in other word, finish edit current chracactor) to next character even though character is not finished

 Korean character has unique property that 'one character' made from combination of consonant and vowel. For example, while "banana" is combination of 6 character, same word in korean "바나나" is combination of 3 character '바', '나', '나' (6 character elements total: ㅂ, ㅏ, ㄴ, ㅏ, ㄴ, ㅏ). So text cursor must stay on one character that is not finished. 

 When typing korean character, sometimes we need to type some special consonant character like 'ㄸ', 'ㄲ', 'ㅃ'. 'ㅆ' ... These keys are modified version of consonant character: 'ㄷ', 'ㄱ', 'ㅂ', 'ㅅ' ... and assigned to same key on keyboard. So in order to type those characters, we press 'shift' key and press character we want on keyboard. But its only a consonant character so cursor must stay to that character. Problem is here: when releasing shift key, cursor moves to next character even though previous character is not finished editing.

• I know its not my hardware problem: tested multiple machine, other pc, laptop ...

• Wrong Qt Creator configuration: tested every text related option.
• Other software (like MS Word, notepad+ etc) behave normal. only Qt Creator text editor behave wrong.

 So i think it is a software bug. its not a great system bug, just a inconvenient thing. If someone who has time left, please handle this issue!