[NAV 2017] Order of Promoted Actions

Hi all,

I have a question regarding promoted actions.

Following behaviour:
On a page (e.g. P42 Order) I created two new action groups with three action items each in the RelatedInformation action container. I sorted them according to my preferences (as I wanted them to be displayed). Worked fine.
But now there is kind of a weird behaviour. When I promote the actions they seem to be displayed in an alphabetical order instead of my default order.

I already checked the IDs. The IDs are correctly sorted.

Now my question:
How are promoted actions sorted? By ID? By Name? By Caption?
Is this behaviour intended by Microsoft?