MarkerWithLabel: labelInBackground property doesn't work

[GoogleCodeExporter]

Setting the labelInBackground property to true does not position the label 
behind its marker. 

What steps will reproduce the problem?
1. Add a new markerWithLabel to the map, setting the labelAnchor property  so 
that the label covers the marker.
2. Set "labelInBackground: true"
3. Reload the page.

Expected result:
The label should appear behind the marker.

Actual result:
The label appears in front of the marker.

Version: SVN rev 473

Browser / Operating System:
Chrome 37 / Linux

Original issue reported on code.google.com by pbu...@gmail.com on 23 Sep 2014 at 8:31

[GoogleCodeExporter]

Still broken — zIndex ignored. Interestingly, this works with version 3.17 of 
Google Maps API. But no stable release is 3.18. :(

Original comment by renefour...@gmail.com on 12 Dec 2014 at 9:05