Steps to replicate the issue:
Set the locale to Chinese, Japanese, or Korean.
View any wikidata attribute of date content , such as P10768 of Q52

What happens and what should have happened instead?:
Actual displayed value:
D M YYYY
Expected display value:
YYYY年M月D日 (Chinese and Japanese)
YYYY년 M월 D일 (Korean)

Actual displayed value:
M月 YYYY (Chinese and Japanese)
M월 YYYY (Korean)
Expected display value:
YYYY年M月 (Chinese and Japanese)
YYYY년 M월 (Korean)