Please improve the behavior of pasting space-splitted CJK contents to the lyric popover

Supposing that we are pasting space-splitted CJK string “一 二 三 四” into the lyric popover.

CJK users expect the following result:

However, till now, it returns this result which is not making any sense in most cases:

P.S.: Even if changing the separator from ASCII space to a minus sign “-”, it still returns the problematic result above.