Support › General › Do not validate on post-save, only on publishResolved
This is a continuation of issue #891 on Github, and addressed in pull-request #1378 with the last comment by Tran that
the code targets to all forms, which is quite dangerous. Please also note that it must runs in various situations: classic editor, block editor, front end forms, user profile, etc.
I am going to re-add this functionality manually, but would like to officially open a support request to determine the best way to add a hook or filter so the core does not need to be modified.
Thank you for your effort.
I'm going to report this case to Anh Tran. He will help you to check the pull request.