When composing a word with Windows Korean IME, using a control based shortcut removes the word currently being composed

When composing a word with Windows Korean IME, using a control based shortcut removes the word currently being composed. If the focus from composing is lost any other way (i.e. alt+tab, mouse click, ..), the word is properly inserted.

Steps to reproduce:

• Run attached sample
• Write Korean text, leaving the last word in composing mode: For example: 한글 ("Korean") by typing 'g -> k -> s -> r -> m -> f' . This leaves the last character in composition mode
• Press control+a to select all text
• EXPECTED: All text, including the word currently being composed, is selected
• ACTUAL: Characters in composition mode are removed, and the text that is already accepted, is selected. In the example above, the last character is removed