Steps to reproduce:
Start GeoServer with release profile on localhost port 8080. (Not essential to the bug, just convenient to show its expression.)
Go to this map
Open the layer control for the layer settings.
Un-check the imagery layer <map-extent>
Check the imagery layer <map-extent>
What should happen:
The imagery layer <map-extent> should draw underneath the vector (states) layer.
What actually happens:
The imagery layer <map-extent> draws on top of the vector (states) layer.