System note and event for labels, milestone and due_date added when creating new issue
Currently, when you create an issue and add labels in the web form before hitting Submit, no system note is added for the labels.
This issue changes the behavior.
There would be one system note representing all those labels added. The timestamp would be the same as issue creation time.
A system note is also created when the milestone, due date or weight (in EE) is set.
Note: Assignee can also be set on issue / MR creation but a system note is not created in this iteration
So basically when you create the issue (and let's also apply to merge requests), you immediately get a system note.