Automatically posting on post updates

Since the last update, the user functionality appears unchanged when adding new posts or updating an existing post. The first publication of a new post is sent to all external social media sites and, when you revisit the post, the flag “Disable Microblog Poster this time?” is checked.

However, when you actually publish the update, the program sends a duplicate of the post to your social pages — despite properly setting of the flag.

Our general setup is typical for Posts:

Default per NEW POST behavior :
Don’t cross-post automatically : (UNCHECKED)
Default per POST UPDATE behavior :
Don’t cross-post automatically : (CHECKED) (This is most likely to be checked.)

HELP PLEASE