I am using the edit in Photoshop option in Lightroom CC, doing my edits in Photoshop, saving and exiting Photoshop, and the edited file is not appearing in Lightroom. Has always worked, not sure when it stopped, but I have done a software update recently.
I'm having the same problem and using LR CC 1.5. I've also tried saving as a .jpg so I could quick share it back into my library, but files I send to PS from LR CC stay a .tif file after attempt to save as a jpg. In other words, the new .jpg does not show up in my PS editing window. I can quick share the .tif back, but it is often above the 200 MB limit. It shouldn't be this hard to round trip between two Adobe applications. Frustrating.