"Go To Photos and Audio" does not see Photos system library
FCP X 10.4.7 does not "see" media from the Photos App system library at all. It does see the iPhoto and Aperture libraries. I have to drag and drop media from within the Photos app to the project/event I am editing in FCP in order to use which causes the metadata name of the file to be overwritten ["fullsizeoutputxxxxxxxxxx] which potentially can cause problems matching media with filenames in each application - so I am not an avid fan of Photos.
I use this new i9 MBP - running Mojave - cover closed, connected to an external monitor which for some reason has caused problems with third party Apps and plugins????
So, right now I manually drag media from Photos to my current project in FCP - taking note of the original filename which I then cut and paste into the thumbnail icon name field of the target media in the media browser. A lot of work.
MacBook Pro 15”, macOS 10.14