I am running PS 2014 and LR 5.7. Both are using ACR 8.7 but when I try to merge shots modified into LR, PS is actually reading the files as if they have been untouched despite the "reading camera raw" message upon import into PS. Only the merge to panorama doesn't work properly and to be honest this is not new. It started to mess some updates ago.
Don't know how to fix this and it is pretty annoying.