You have a serious bug in Lightroom that has been there for several years and I at least reported to you twice on previous versions of Lr. It has been ignored.
This happens when both Lightroom, and Photoshop are up to date (ACR up to date).
When I select a number of photos in Lr which I have cropped and edited, to further edit in Photoshop by clicking CMD E (Mac), on occasions, (it does not happen all the time) some photos do not open in Photoshop. For example, I usually have about 30 photos selected and when I open in Ps, I find only 27. I have to go back to Lightroom, find those that were missed and open those again.
This is NOT user error, as I am 100% certain that I am SELECTING ALL before I hit CMD E.
The way to overcome this is to have Photoshop (ACR) a version behind Lightroom so that when I try to open the photos from Lightroom, it will ask me whether I want to render in Lightroom instead, and that way all photos get exported to Photoshop.