Is this a bug or an intended behavior?
Open the Tile Layers page
Click on a layer name
The Edit layer page opens
The selected tab is "Publishing"
Since the user is coming from the "Tile Layers" page I think having the "Tile Caching" tab selected by default will be more appropriate.
Thanks that is a nice workflow optimization
The PR is merged to master, if you wish to backport this functionality to 2.16.x we can do so after one month.