auto-completion in CM,CQB has a bug on system table

자동완성 side effect
select * from db_class c --> 이렇게 alias 주면 이때도 자동완성 팝업이 나옴.
근데 이게 c 한담에 저 창을 없애고싶어서 space 를 한번 더 누르는데 그래도 창이 안없어짐.
꼭 esc를 눌러야만 저 창이 없어짐.

I can reproduce easily with that query.
Auto-completion featue in the query editor doesn't recognize system table name. So when you type an alias of the system table that query, the editor kind of pushes users to choose one of auto-complete window and it doesn;t disapear although a user typed "space".

How can a user make the auto-complete window go away when a user doesn't want to choose from the window? space bar should work correctly. Because there is no match as "c " table name in the db.