Problem with copy module in ansible 2.5

hello,
I have a problem with ansible 2.5 and i don’t have the same behaviour with 2.2
When I copy a folder contain just a folder I have an OK not Changed
example:

  • name: copy files share
    copy:
    dest: “/opt/”
    mode: 0644
    owner: root
    group: root
    src: “./share”

Task is ok NOT CHANGED
share folder contain just one folder
Can please someone give me the explication