different "created Milestone messages"
If you delete a milestone directly after creating it, gitlab shows the following message in the activity feed:
Notice that the milestone number and name are missing.
This is very confusing for users!
If you wait a little while before deleting the milestone gitlab will render this event:
You can see the examples in this feed:
https://gitlab.com/haynes/404-test/activity
The first case is very confusing.
Gitlab should always render the second case (with the milestone number and name)