It's not a timeline post, the problem is in the content. for example, if you create a 'discussion', it should appear on the timeline, and a notification should be sent to everyone who is following you. This happens if you create a discussion and set the visibility to 'public'. If you initially create a 'discussion' and set the visibility to 'Only Me', it will not show up on the timeline, and no notification is sent. this is all ok and perfect.

the problem happens if you change your mind, and then decide to make the 'discussion' visible to public. when you edit the 'discussion' and change visibility to 'public' id does not show on the timeline, and no notification is sent. that's the problem.