1 )If Photoshop is CLOSED and then I "Open as Layers ....." the computer will just sit there doing nothing. If I click Photoshop to open it then the operation will complete and the photos will be layered. I THINK THIS IS BUGGY BEHAVIOR
As a side note, this BUG affects the Panorama and HDR the same way. Photoshop has to be opened manually. The "Open as Smart Object works correctly.
2) If Photoshop is OPEN and then I "Open as Layers ...." the photos will open as layers in Photoshop
3 )If Photoshop is CLOSED and I "Edit in Adobe Photoshop ..." Photoshop will open and the two photos are loaded as separate objects. This is the expected behavior.
I think this is a change in behavior in Lightroom CC2015.7