Lightroom :: Photos Are Not Automatically Marked For Republishing?

I use Lightroom 5.2 and Photoshop CC.  I also use a number of publish services.  If I use Lightroom to edit a photo that has previously been published, it will be marked automatically for republishing.  If I use Photoshop to edit a photo that has been previously published (in this case a .PSD) and I select Edit Original to preserve layers in the file, Lightroom does not seem to recognize that the photo has been edited externally, and does not automatically tag the photo for republishing.  It happens this wal with all of the installed publish services.
 
Is this normal behavior, or have I inadvertently changed a Lightroom setting that prevents this from happening the way it should?  It's quite annoying, and I have convinced myself that previously it did not operate this way.