Mate, I'm not judging your response.
I am simply pointing out a fact...
I updated to 10.5 and then the Project files which reside in the Music Folder and Logic I made in recent days are no longer there.
It's that freakin simple! No change of anything other. No putting files in odd folder locations no other changes!
Okay?
[Ed. I posted on another thread believing the OP had a same problem. The "mirroring' of my display does not seem to be the problem. I've looked into it already. The Project Files are simply not where they were last. I've posted to Apple for some response. I'm not 'muck racking' here. I'm just bewildered. That is all!]
In another thread, you mentioned your laptop being mirrored. That bears mentioning and could very well be the source of your issue.